Greed and lack of patience. Strong nerves are needed, and not just nerves..)

I expected to hear something banal - 'lack of experience', 'poor risk management', 'the market is unpredictable'.
But the answer I received was so simple... and so accurate that I was left in shock. ChatGPT said that the main reason is not the strategy. It's BEHAVIOR.

Most traders do not lose because they don’t know where to enter, but because they don’t know when to exit. They hold losing positions hoping that 'everything will bounce back'. They don’t take profits because they think, 'just a little more and it will be x2'. And then: either liquidation, or pain, or FOMO on the next coin.