I don't know about humility helps or not but one needs to be 100% honest to himself and towards his instincts.Trusting your instincts and your research and accepting the result is very important.Because if the result is in your favor it builds your confidence and if not than it builds your experience.Patience is also an important key in trading.This doesn't mean you don't have to do any research or study anything.All those are primary steps which everyone has to follow on that basis instincts are developed and decision are made.
True! I have seen a lot of people who skip the learning steps to jump right into practice trading! That is a huge mistake that a lot of people do! I don't understand why they could jump right into something can lead to losses without knowing any knowledge about it. It is not about you're lucky or not. Once you do that, you risk all of your investment into something that you don't even know a little about! Learn, guys!