I agree if as a trader you have to be confident. Confidence comes from a lot of experience with analytical skills that are often appropriate. This takes practice and time, not instant.

I do not agree if the trader's orientation is just to win and make a profit, this can make you trapped in greed. However, we must understand that the market movement is very dynamic, when our analysis misses and loses, what forms in our brain is just how to get profit immediately to cover losses. Psychologically it is not good in trading strategies because it can mess up the analysis, hurry to profit, so you force to enter the market even if the situation is not possible.