Onecomes to believe whatever one repeats to oneself sufficiently often, whetherthe statement be true or false. It comes to be dominating thought in one'smind.
It is said that power corrupts, but actually it's moretrue that power attracts the corruptible. The sane are usually attracted byother things than power.
Talkback to your internal critic. Train yourself to recognize and write downcritical thoughts as they go through your mind. Learn why these thoughts areuntrue and practice talking and writing back to them.