Attachment to being right and mental rigidity
The market is testing something deeper than capital: internal flexibility. When the trader clings to an idea, a reading or a bias, he begins to defend it instead of observing it. Trade ceases to be an open hypothesis and becomes a personal attitude.
At that point, changing your mind feels like losing internal status. Signals are ignored, data is reinterpreted and the position is held beyond reason. Not because the market indicates it, but because letting go of the idea generates psychological discomfort.
Rigidity is not always evident. Sometimes it is disguised as conviction, discipline, "confidence in analysis." But when the mind stops adjusting to new information, the risk increases silently.
True mental strength in trading is not in sustaining an idea, but in being able to release it without internal conflict. Flexibility is not weakness; it is conscious adaptation. The market rewards those who can upgrade without defending themselves.