Trading Psychology: 5 Biases Your Journal Can Actually Catch

Trading psychology advice usually stops at "be more disciplined," which is useless because you can't fix a bias you can't see. The value of a journal is that it makes biases visible and countable. Here are five it catches.

1. Loss aversion → risk creep after losses

The urge to "make it back" shows up as risk-per-trade rising right after red trades. Track risk in R and the pattern is impossible to hide.

2. Recency bias → chasing the last thing that worked

After a couple of wins on one setup, you overweight it — even out of context. Setup-tagged results show whether your recent favorite actually has positive expectancy or you're just riding a hot streak.

3. Confirmation bias → remembering wins, forgetting losses

Memory is a liar. You recall the setup that "always works" and forget the times it didn't. A logged sample replaces the flattering story with the real win rate.

4. Outcome bias → judging decisions by results

Rewarding rule breaks that happened to win, and punishing good trades that lost. Tracking rule-following separately from result is the only way to score the decision, not the dice.

5. Overtrading → the impulse-trade count

Boredom and revenge both produce trades outside your setups. Give yourself an honest "no setup / impulse" tag and count them weekly. The number is usually a wake-up call.

None of these get fixed by willpower alone. They get fixed by seeing them in your own data, week after week, until the pattern is undeniable — which is exactly what consistent journaling gives you.

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