Mechanism
Humans dislike inactivity. In markets, inactivity feels like missing out, so people take marginal setups.
Marginal setups have poor expectancy and high emotional cost. They also create the conditions for revenge trading.
Flat is a valid position. It preserves optionality.
Psychology as mechanics: “discipline” is just a system with gates. If your rules are optional, you do not have rules, you have moods.
- Add friction: delay buttons, max trades, cooldown after loss.
- Make deviations expensive: if you break a rule, you reduce size next session.
- Track the precursor state: boredom, urgency, anger, FOMO.
How it kills accounts
Boredom → low-quality entry → small loss → irritation → revenge size → big loss → spiral.
How it kills accounts:
- Emotion changes your rules.
- Rules become negotiable under stress.
- Decision frequency rises (overtrading).
- Quality drops, variance rises.
- The account pays for the mood swing.
Rule that survives
Define ‘no trade’ conditions explicitly.
If you’re bored, stop looking at the screen.
Only trade when your setup and regime criteria match.
Rule that survives:
- Add friction after losses: cooldown + max trades.
- If you negotiate rules mid-trade, you exit or reduce.
- Make deviations costly (next session reduced size).
Example archetype
You sit down with no real setup, then find one because you feel you should trade. The trade loses. You try to ‘get it back’. That’s not trading; it’s state management.
Tell: if you feel urgency, you’re late. Late trades pay twice: once in price, once in behavior.
Deep dive
Flat preserves optionality
Optionality is power. Overtrading sells your optionality for dopamine.
Related: Opportunity cost is real P&L.
Glossary: FOMO.
Field checklist
- If you feel urgency, you’re likely late. Late trades pay the spread twice: once in price, once in behavior.
- After a loss, add a cooldown. Your brain is now biased toward revenge sizing.
- If you’re negotiating rules mid-trade, you’re already off-plan.
- Use a checklist to prevent story-trading.
- Stop when your decision quality drops, not when your account hits zero.