What characteristic or quality makes life difficult?

Image Source
Until you are able to get out of the invisible feeling called 'mind', you will not find your character traits easily.
We are fine when we go on the field or before we go on the field.
But when the game starts, we are no longer right in ourselves.
What to do, what not to do, or what to do, can't find easily. So I make a lot of mistakes in the playground. Later, I mean at the end of the game I understand the mistakes.
But on the other hand, spectators and coaches understand and see our mistakes while playing.
We often criticize the fault of the player. Or blame them.
So you have to be like a coach, not a spectator. A decision should be made with a cool head.
What things or what characteristics are leading your life to the good and which are leading to the bad.