The quote library

Every line here is in no particular order. Most of them come from anywhere I grew up on, and kind of stick in my head, with significant stories and meaning.

How to build the habit

This is the real work of step two. What makes savings hard is the weekly discipline it keeps asking of you. These are the practices that make the habit stick, and they matter more than any of the money math further down the list.

• Track your expensesThe value of tracking is seeing the full scale of where the money goes from the moment it lands in your account, while it happens. Until the real numbers are actually in front of you, you'll always be guessing, and everyone guesses in their own favor. Start building the habit in understanding where each dollar goes!
• Go through the subscriptions and the standing costsAnything renewing that you did not consciously decide to renew this year is a candidate. Most people would find something they had forgotten they were paying for.
• Wait twenty four hours before any large purchaseThe urge to buy and the decision to buy are two different things, and a day apart is usually enough to tell them apart.
• Automate the transfer so you never see the moneySet the savings system to transfer immediately on payday, before anything else has a claim on it. There is a high chance that the money that reaches your account gets spent by something random.
• Give the big plans their own accountA holiday, a car, a deposit. Name each sinking fund as its own account and fund it separately to keep that money out of the general pool.
• Make the good choice easy and the bad one slowTake any saved card information out of the shopping apps and keep the savings transfer one tap away.
• Price the optional things in hours workedConverting a purchase into the hours it costs you is a more honest metric to use than the actual price. This is strong psychological training.
• Do not raise the spending when the income goes upHold your spending flat at every cycle after a raise and the actual increase will land in your savings without you having to feel it.

None of this is complicated, and that is deliberate. The difficulty is doing it for long enough that it stops taking effort.

Financial instruments

This covers the instruments people most commonly buy. It is for reference only and recommends nothing. Each entry covers what the instrument is, where its return comes from, and what can go wrong with it.

• Stocks, also called shares or equitiesA stock is a unit of ownership in a company. The holder has a claim on what the company owns and earns, but only after the company has paid its lenders and other creditors, so shareholders get whatever is left. The return comes from changes in the price and, when the company pays them, from dividends. A stock has no maturity date, and the company never promises to repay it. If the company fails, shareholders are paid last and usually recover nothing.
• Bonds, or fixed incomeA bond is a loan to a government or a company. The borrower pays interest on a fixed schedule and repays the principal on a stated date. If you hold a bond to maturity and the issuer pays in full, you know the return in advance. Bond prices move in the opposite direction to interest rates, so if you sell a bond early, you may receive more or less than you paid. The two main risks are that the issuer defaults and that inflation erodes the value of the fixed payments.
• Funds: ETFs and mutual fundsA fund is a single holding that owns a basket of other holdings. A mutual fund sets its price once a day after the market closes. An exchange traded fund trades on an exchange throughout the day, like a stock. Both charge an ongoing fee, the expense ratio, which the fund deducts whether its value rises or falls. A fund spreads the risk of any single holding across many, but it still carries the risk of the market it tracks.
• OptionsAn option is a contract that gives the buyer the right, but not the obligation, to buy an asset (a call) or sell it (a put) at a set price before a set date. The buyer pays a premium and loses all of it if the option expires worthless. The seller collects the premium and must buy or sell the asset if the buyer exercises. On an uncovered call, there is no limit to how much the seller can lose. Because options expire, a buyer who is right about the direction but wrong about the timing still loses the whole premium.
• FuturesA futures contract is a binding agreement to buy or sell an asset at a set price on a set date. Unlike with an option, both sides must settle. Traders put down margin, a deposit worth a fraction of the contract's value, so both gains and losses are large compared with the cash they put up. If the deposit falls below the required level and the trader does not add funds in time, the broker can close the position.
• REITsA real estate investment trust is a company that owns income producing property. To keep its tax status, a REIT must distribute at least 90% of its taxable income to shareholders, which is why REIT yields tend to sit above those of the wider market. REITs trade like stocks and carry property risks, including vacant units, the cost of the debt on their buildings, and changes in interest rates.
• Cash and money marketThis group covers bank deposits, Treasury bills and money market funds. Investors hold them because their value barely moves. The return comes from interest. The main risk is that inflation outpaces that interest, so the money buys less than it did when you deposited it.

Nothing on this page is advice. Positions that use borrowed money, such as futures and sold options, can lose more than the amount put into them. Anyone still learning how these instruments work should hold off on them.

Portfolio construction

The two models above tell me what a position is worth. The weights below set how much of the portfolio each category takes up. With any new contribution, I rebalance back towards these weights, so no category drifts far after a strong run.

• US equitiesThis is the base of the book, mature US companies bought using the two long term models above, and held for years.40%
• Conviction holdingsThese are the names I broke the rule for, carried at a higher weight than the models would allow. They have produced both the best and the worst outcomes in the book.30%
• DefensiveThis bucket holds the two Treasury funds, GOVT and SPIP. They are held to keep their value when shares fall, so a bad year never forces me to sell.20%
• InternationalThis covers everything listed outside the US. The weight is small because I know these markets less well than the domestic one.10%

These are the weights I aim for, and prices move the real weights away from them every day.

The important metrics

These are the numbers I look at when assessing stocks, each with its formula written out and what it means.

Valuationwhat you are paying

• P/E ratio, price to earnings
  P/E=Share priceEarnings per share
  It shows what you pay for one dollar of annual profit. A P/E of 20 means twenty dollars of price for one dollar of yearly earnings. Whether a high or low number makes sense depends on what the earnings are doing next, which the ratio itself cannot tell you.
• Forward P/E
  Forward P/E=Share priceExpected earnings per share next year
  This is the same ratio run on an estimate instead of history. It is useful when a one off event distorted this year, and dangerous because the estimate is somebody's opinion.
• PEG ratio
  PEG=P/E ratioEarnings growth rategrowth rate written as a number of percent
  This is the P/E adjusted for how fast profit is growing. A company on 30 times earnings growing at 30 percent has a PEG of 1. It is a rough tool, and it misleads on cyclical companies, whose profits rise and fall with the economy.
• P/B ratio, price to book
  P/B=Share priceBook value per share
  It compares the price with what the company would own after clearing everything it owes. The ratio is useful for banks and asset heavy businesses, and close to useless for a software company whose value is not on the balance sheet.
• P/S ratio, price to sales
  P/S=Share priceRevenue per share
  Investors use this when a company has no profit to divide by. It tells you what you are paying for a dollar of sales, and nothing about whether those sales turn into money.
• Enterprise value, EV
  EV=Market capitalization+Total debt−Cash and equivalents
  It is the price of the whole business, equity and debt together. If you bought the company outright you would inherit the debt and keep the cash, so this is the number that reflects what it costs to own.
• EV/EBITDA
  EV/EBITDA=Enterprise valueEBITDA
  It is the usual way to compare two companies carrying different debt loads and different tax positions, since the calculation leaves both of those out.
• Free cash flow yield
  FCF yield=Free cash flowMarket capitalization
  It measures the cash the business generates in a year against the price you pay for it. Free cash flow is harder to manipulate than earnings, which is why I weight it more than the P/E.
• Dividend yield
  Dividend yield=Annual dividend per shareShare price
  It is the cash paid to you each year as a percentage of the price. A yield that looks unusually high is usually the market telling you it expects the dividend to be cut.

Profitabilityhow good the business is

• Gross margin
  Gross margin=Gross profitRevenuegross profit is revenue less the cost of sales
  It shows what is left after the direct cost of making the product. It sets the ceiling on every margin below it, and it moves when a company gains or loses the ability to raise prices.
• Operating margin
  Operating margin=Operating incomeRevenue
  It shows what is left after the cost of running the company, including salaries, marketing and research.
• Net margin
  Net margin=Net incomeRevenue
  It shows what is left after interest and tax, so it reflects the capital structure as well as the business. Two otherwise identical companies can report different net margins purely because one of them borrowed.
• EBITDA
  EBITDA=Operating income+Depreciation+Amortization
  The name stands for earnings before interest, taxes, depreciation and amortization. It shows what the operations earn before financing and accounting choices come into it. Depreciation is a real cost, machines do wear out, and managers often point to EBITDA when net income looks worse.
• EPS, earnings per share
  EPS=Net income available to common shareholdersWeighted average shares outstanding
  It divides the company's profit across each share. It can rise while profit is flat, because a buyback leaves fewer shares to divide that profit between.
• ROE, return on equity
  ROE=Net incomeShareholders equity
  It measures what the company earns on the money shareholders have left in it. Borrowing makes this number look better, because it lowers the equity at the bottom of the fraction while the profit at the top stays the same.
• ROA, return on assets
  ROA=Net incomeTotal assets
  It applies the same idea to everything the company uses, borrowed or not. It is useful because borrowing cannot make it look better.
• ROIC, return on invested capital
  ROIC=Net operating profit after taxInvested capitalinvested capital is debt plus equity less cash
  It measures what the business earns on all the money put to work in it. Of everything on this list, this is the one I care about most for a long hold. If a company earns more on the money it puts to work than that money costs, it grows in value. If it earns less, every reinvestment leaves the company worth less.

Financial strengthcan it survive a bad year

• Current ratio
  Current ratio=Current assetsCurrent liabilities
  It shows whether what comes in over the next year covers what goes out over the same period. Below 1 is not automatically a problem, but it means the company is relying on something continuing to go right.
• Net debt
  Net debt=Total debt−Cash and equivalents
  It is what the company would still owe if it emptied its bank account tomorrow. Plenty of companies carrying a large debt figure hold almost as much cash against it.
• Net debt to EBITDA
  Net debt to EBITDA=Net debtEBITDA
  It shows roughly how many years of operating earnings it would take to clear the borrowings. Above about 4 is where lenders start paying attention, though what counts as high depends on how steady the industry is.
• Debt to equity
  Debt to equity=Total debtShareholders equity
  It compares how much of the company lenders have funded against how much the owners have funded. A high figure raises returns in good years, and it is what pushes companies into failure in bad ones.
• Interest coverage
  Interest coverage=Operating incomeInterest expense
  It shows how many times over the company can pay the interest on its debt out of what it earns. When this falls toward 1, the company is earning just enough to cover that interest and nothing more.

Cash and what comes back to youthe part you can spend

• Free cash flow
  Free cash flow=Cash from operations−Capital expenditure
  It is the cash left after paying to keep the business running and to keep its assets standing. This is the money that can fund a dividend, a buyback, a repayment or an acquisition without borrowing. Accounting choices can move reported profit a long way, but they move this number far less.
• Payout ratio
  Payout ratio=Dividend per shareEarnings per share
  It shows how much of the profit the company hands out instead of reinvesting. Over 100 percent means this year's earnings do not cover the dividend, so it comes out of reserves or borrowings.
• Buyback effect
  Buyback effect=Shares outstanding this year−Shares outstanding last yearweighted average, read year on year
  A buyback returns money to shareholders without paying them any cash. A falling share count means your slice of the same company is getting bigger. A rising one, often from paying staff in stock, means it is getting smaller.
• Working capital
  Working capital=Current assets−Current liabilities
  It is the money tied up in running the business day to day, mostly inventory and unpaid customer invoices. Growth ties up more working capital, which is how a profitable company can run out of cash.

Read every one of these three ways: against the same company five years ago, against its closest competitor, and against what the current price already assumes.

Signs that your finances are working

These are the things to check when you want to know whether your financial system is working. They are a mixture of day to day behavioral signs and specific financial figures.

• Your money is buying back your timeThis one matters most and takes longest to show. The money goes in automatically, growth and cash flow build on their own, and dividends and returns start paying for things you used to work hours to afford. At that point the system runs without you steering it, and you only check that it is still running.
• You know your own habits well enough to predict themYou split fixed and variable spending in your head before any app does it for you, because the discipline comes from habit rather than from a tool. That split is what stops lifestyle creep, so when a raise arrives, variable spending stays where it was. You also price the opportunity cost of an optional purchase as you make it, since you already know roughly what that amount would have grown into if you had invested it instead.
• An emergency is an inconvenience, not a crisisYou hold three to six months of essential expenses as cash you can reach the same day, so a job loss or a medical bill does not force you to sell anything at the worst possible moment. The usual advice is less settled than people assume. The FDIC says financial experts generally recommend at least six months of living expenses. The St. Louis Fed writes that experts often recommend three to six months of essential expenses. The Consumer Financial Protection Bureau declines to give a number and says the amount depends on your situation.What the data says. In the Federal Reserve's 2025 survey of household wellbeing, 55 percent of adults said they had set aside money covering three months of expenses, down from a high of 59 percent in 2021. Separately, 63 percent said they would cover a hypothetical 400 dollar emergency expense with cash or its equivalent, down from 68 percent in 2021.
• Your savings rate sits around 20 percentThe rate matters more than the balance, because the balance reflects how long you have been at it and the rate reflects what you are doing now. It is also the part you control outright.For scale. The United States personal saving rate, measured by the Bureau of Economic Analysis as personal saving against disposable income across the whole country, was 3.0 percent in July 2026. It is a national accounts figure, so it is not a like for like comparison with your own rate, but it does tell you how unusual a 20 percent habit is.
• You did not buy any of it to be seenYou bought the car, the watch and the label because you wanted them yourself. Money that stays invested keeps compounding, while everything bought for display carries a running cost and is often financed. A useful test is to ask whether a purchase would lose most of its appeal if nobody could see it. If it would, you were buying it for other people.
• A bad month does not change the planThe market falls, the money still goes in on payday, and you do not sell anything. This is the hardest sign to confirm, because you only find out whether it holds during a bad stretch.
• You are not paying interest on anything except a houseYou carry no revolving balance, no financing on something that loses value and no minimum payments. Interest compounds automatically, the same way your contributions do, but it works against you.
• Money has stopped being something you worry aboutThe last sign is behavioral. Once the system runs, you check it less, you stop doing money math in the middle of the night, and you can pay a large unexpected bill without panic. This shift usually arrives long before the balances look large.

None of these markers is a standard for judging anyone. Someone supporting a family, carrying student debt or working on a variable income has a completely different set, and a 20 percent savings rate is not equally available to everyone.

Rules for big purchases

A car and a house are the two purchases most people decide by asking what a lender will approve, rather than what they can pay every month without strain. The common guidelines below keep a purchase inside what you can pay.

Carthe 20/3/8 rule

• The 8 percent covers every car in the householdA payment already running on another vehicle counts against the same 8 percent, so a second car has to fit in whatever is left after the first one.
• Keep investing more each month than the car costs youOnce the car payment exceeds what you invest, the car is taking the money that was meant to be invested.
• Luxury vehicles are a cash purchaseThe stricter version of the rule says to pay cash for a luxury car, or to finance it over no more than a year. If a twelve month term looks uncomfortable, the car costs more than you can currently afford.
• Treat three years as the outer limitA longer term makes an expensive car look affordable by thinning the monthly payment, and it is how people end up owing more than the car is worth. Shorter terms cost less in total, and you stop owing more than the car is worth much sooner.

Housethe 25/3/5 rule

• The 25 percent covers the whole paymentThe payment includes principal, interest, property taxes and homeowners insurance. People often leave out taxes and insurance, and those two can turn an affordable house into an expensive one.
• Three percent is a floor for a first homeIt exists so that a first purchase stays reachable. For a later home the usual target moves toward 20 percent, which removes mortgage insurance and lowers what you pay every month.
• Five years is about the cost of buying and sellingBuying and selling a house costs fees, taxes and commission. If you sell within about five years, those costs tend to eat up whatever the house gained.
• Keep the emergency fund after you closeEmptying the savings account into the down payment leaves you with nothing spare on the day the roof or the boiler goes. A house needs repairs, and the first one often comes soon after you move in.

Everything elsethe general test

• Borrow only for things that hold their valueA house can appreciate and an education can raise what you earn. A car, a phone and a holiday lose value. If you finance one of them, its value drops faster than the loan balance does, so you can end up owing more than it is worth.
• If you could not pay cash for it, you cannot afford it yetA house is the real exception, and arguably a degree. Everywhere else, financing pushes the same gap into next year and adds interest to it.
• Make the wait match the priceThe habits list already covers waiting twenty four hours on something small. For anything costing more than a month of savings, wait a month. If you still want it after thirty days, it is usually worth buying, and often you will not.
• Compare it with what the money could have grown intoA 40,000 dollar car costs you 40,000 dollars today and whatever that amount would have grown into over the years it would otherwise have stayed invested. Weigh the purchase against the second figure.

Both rules are conventional guidelines with no official standing. They mark the upper limit of what is affordable, and they are not targets to aim for. Someone carrying no other debt with a large emergency fund behind them has more room than these numbers allow. Someone carrying other debt, or holding no emergency fund, has less.

Brokerage

My accounts are focused on 5 places, each with its own job. And most of the money flow is done automatically, through both contributions and manual management. My allocated income would land in the checking account, and everything else leaves it on a consistent schedule.

What makes the arrangement work is that each account has exactly one purpose and the transfers between them run on a schedule, with no decision to make each month.

How to calculate your net worth

Net worth is everything you own, less everything you owe. It is the only figure that shows your whole financial picture at once. Income says nothing about how much of it you kept, and a savings balance says nothing about what you owe against it.

Why the hard assets sit on their own lineliquidity

A car has value, but you cannot use it to pay a bill that arrives this week. Adding it to the same total as cash inflates the figure and hides whether you could cover a bill without selling something that takes a month to sell. Liquid net worth is the one to watch month to month, because it is the part you can actually reach. Total net worth is the one to track over years, because it is the complete picture.

The Federal Reserve uses the same definition in its Survey of Consumer Finances, the difference between a family's assets and its liabilities. In the 2022 survey, which is the most recent one published, median family net worth was 192,900 dollars. The median is the better figure to compare yourself against, because it sits at the middle, where the largest fortunes cannot pull it upward.