But trading is very different, this is a ruthless field where if you are wrong the market will let you know pretty soon. This is why I view biased trading as probably one of the most important things to get rid off, its not easy, specially if you have large positions in the market favoring a certain approach or prediction.
The temptation to close your eyes and tell yourself everything is fine is large(I fell in that trap many times, although I have gotten better at it, specially after having improving a certain health condition) but a ruthless look at the facts, to me is so important. I dont care if it will make me throw up, faint and destroy my current view of the world, I'm willing to look at the facts and reality and change my views. If I need to be hospitalized in the process, so be it, at the end of the day I only care about my P&L