Memory is a generous accountant. It rounds, merges two buy-ins into one, and loses the clock. A log of five lines is too dull to lie elaborately. Dull is the point. You are building a record you can add up on Sunday, not a diary of hands.

The five lines

Line one: the date and where the money came from, such as the entertainment envelope. Line two: the amount you started with. Line three: any amount added after the start, including zero if you added nothing. Line four: the time you started and the time you stopped. Line five: the amount you left with. That is the whole instrument.

Write line two before the first result. A start figure written afterward is already a reconstruction. Line three is the line people skip, and it is the line that distinguishes a calm session from a chase. Loss limits are invisible if added money is blended into the opening stake.

What you leave out on purpose

Leave out the stories. A bad beat, a heater, a rude neighbor: none of these changes the arithmetic, and all of them invite you to edit the numbers until they match the story. If you want a journal, keep it somewhere else. The log is a ledger. Ledgers that grow adjectives become unusable.

Also leave out a guessed figure. If you do not know the end amount, write unknown, and treat that session as a failed record. One unknown is a prompt to count in real time next visit. A string of unknowns is a sign you do not actually want a number. That sign matters more than a reconstructed total that looks tidy.

How the lines meet the caps

Once a week, add the start amounts and the added amounts. That sum is what you put at risk, and it is the figure to set beside the weekly cap. The end amounts tell you the result. Do not substitute the result for the risk. A week that ended even, after large additions, was not a quiet week. Session caps versus weekly caps only function if this addition happens.

Compare the clock with the plan on the same pass. A session that respected the money and ignored the time is a partial miss. Mark it as one. Partial misses are how a plan erodes while the money column still looks polite.

Where to keep it

A note on your phone or a card in the envelope is enough. The best location is the one you will actually use before you sit down. A spreadsheet you abandon is worse than five lines in a place you already open. If you share household finances with someone, the log is also how you avoid a softened verbal report. You can show the lines. You do not have to perform the night.

Questions after a session are the reflective layer. They come after the lines exist. Reversing the order produces thoughtful fiction.

A small standard of honesty

If the lines and your memory disagree a week later, believe the lines. If you catch yourself wanting to rewrite a line, leave it and add a dated correction underneath. Silent edits are the end of the tool. This is an adult habit for legal play. It is not a way to manage an activity you are not allowed to do, and it is not a substitute for help if the numbers are regularly worse than you can explain to yourself.

Frequently asked questions

Do I log sessions I won?

Yes. Wins still have a start amount, additions, and a clock. Skipping them biases the week.

What if I added money and forgot the amount?

Write unknown and count the record as broken. Next time, write the addition at the moment you make it.

Is a long journal better?

Not for this job. Five lines will be kept. A narrative will be edited until it flatters the writer.

Steps

Write the date and the start amount: Do this before the first result, so the figure is not reconstructed from memory.
Add a line for anything you add later: A second buy-in goes on its own line at the time it happens, not as a correction afterward.
Note the clock: Record the start and the stop, including a stop that ran past the plan.
Write the end amount the same night: Four or five lines, no narrative. Compare with the cap when you are away from the table.