moves that humans are afraid of

We people don't us some of the best moves because most people are afraid to use them and thats why people lost to others or the compter players .It can happen in the end and middle game.We ,well most of us are afraid because we think oh no did I do something wrong when it is sometimes the right move to do and can't sometimes understand why being afraid of doing it.Even pros can be affected by that so if you are a novice player try and think of the best move even if it makes you afraid, think ahead .here is a puzzle to end this. good luck