Hate making stupid mistakes and unforced errors. This includes not getting out of a bad trade when you know you are wrong. Many players will play their best game when they are coming from behind. There are many parallels between tennis and trading, both being individual performance disciplines. How you frame out an individual experience or event will affect your success in the long run.
Many great traders use periods after drawdowns to go back to the drawing board.
Some of the best systems and trading ideas have come after periods of adversity. But when times are tough, that is when we can rise to the occasion and prove that we can overcome any obstacle set down in our path. They latch on to the tiniest shift in momentum and milk it for all it is worth. Latch on to that next winning trade and convert. The first small moral victory is the first step towards reaching the top of Mt. Everest.