1. Fear Fear of losing prevents traders from entering good setups. Fear of missing out (FOMO) leads to chasing trades without proper analysis. 2. Greed Staying in trades too long, hoping for more profits, can lead to reversals and losses. 3. Overconfidence Winning streaks may cause traders to take excessive risks or abandon their strategies. 4. Revenge Trading After a loss, trying to recover immediately often leads to poor decisions and more losses.