IMO these all fits in one category, and that is emotion. So in order to avoid these, the first thing one should learn is to have control over their emotions. This is what I tell everyone who are newbie and want to start their journey in trading. This one skill to have control over your emotions could solve many problems newbies face at the start of their journey. When the emotion is out of the question, all you are left with is analysis and putting that research in action to see results. You failed? just forget about it and do new analysis and trade according to that. I think this will bring out the best in the journey of trading.