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.
A cup is useful only when it is empty; and a mind that is filled with beliefs, with dogmas, with assertions, with quotations, is really an uncreative mind.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends upon the unreasonable man.