A trading journal is a record of every trade you take, kept so you can learn from it later. Not just the entry and exit — the reason you took the trade, how you felt, and what happened afterwards. Most traders keep the numbers the platform hands them and stop there. A proper journal captures the part the platform never sees: why you did what you did, and whether it worked for the reason you thought.
What it is
A trading journal is a structured log of your decisions, not only your results. The account statement already tells you what closed and for how much. The journal adds the context around it — the setup you were trading, the risk you took, the exit plan, and an honest note on whether you followed it. Over dozens of entries, patterns appear that no single trade would reveal: the setup that only wins when you are patient, the pair you keep losing on, the habit of moving a stop the moment it is threatened.
What to record
A useful entry takes a minute and covers five things:
- The setup — what you saw and why you entered.
- Risk and size — your stop, your target, the position size.
- The outcome — result in pounds and in R, against what you risked.
- The deviation — whether you followed the plan or overrode it.
- The state — how you felt: rushed, bored, revenge-trading, calm.
The value is not in writing it — it is in the honesty writing forces. You believe you cut losers quickly; the log shows you held three past your stop last month. You think a strategy is broken; the log shows it is fine and you kept skipping the best trades.
An example
Say you review a month and the totals look flat — up £120 across forty trades, nothing to celebrate. The journal tells a sharper story. Your planned setups made £900. Your off-plan trades — the ones you took out of boredom or to win back a loss — lost £780. The strategy is not the problem; the overrides are. Without the log you would have shrugged at a flat month and changed the strategy. With it, you know exactly which £780 to stop giving away.
Why it matters
You cannot improve what you do not measure, and results alone are not measurement — they are the scoreboard, not the game. Two traders can post the same monthly figure while one followed a sound process and the other got lucky doing the wrong thing. Only the journal tells them apart.
- Process over outcome — it separates good decisions from lucky ones.
- Pattern-finding — recurring mistakes only show across many trades.
- Monitor then review — watch it live, study it later.
For automated trading the principle holds, it just shifts. The EA logs its own trades, so your job moves from recording to reviewing: you monitor the account as it runs, then sit down periodically and read what actually happened. That is where a clear record of every trade, labelled and reconciled, does the work a scribbled notebook used to.
The Karnek note
For automated trading, Karnek is the monitoring half of monitor-then-review. It reads every trade from your live terminal and keeps a clean, reconciled record of what each EA did — entries, exits, drawdown, the lot — so your review sits on real data rather than memory or a vendor's screenshot. You still do the thinking; Karnek just makes sure the log is honest. It reads only, and can never place or close a trade.
Written and reviewed by the Karnek Research team. Last updated August 2026.
Educational content only - not financial advice. Past performance does not predict future results. Trading carries significant risk.