The big six: loss aversion (cutting winners early because green P&L feels fragile), confirmation bias (only reading bullish takes once you're long), recency bias (over-weighting last week's outcome in this week's sizing), gambler's fallacy ('three losses in a row, the next must win'), anchoring (refusing to close a losing trade because the entry price feels like a reference point), and overconfidence (every trader thinks their win rate is higher than it actually is — a journal proves otherwise).
The remaining biases — sunk cost, hindsight, availability, narrative, herding, FOMO, status quo, optimism, framing, and a dozen more — each get their own entry. The point is not to eliminate the biases (you can't) but to recognize them in real-time and have pre-committed responses ready. The trader who notices 'I'm doubling down because I refuse to be wrong' has a fighting chance to stop. The one who never names the bias keeps doubling down.