Perfectionism

I’m catching up on listening to the recorded conference calls.  On one I listened to you spoke briefly about perfectionism and the difference between it and idealism.  You said perfectionists self-sabotage.  I can see this tendency in one of my children.  I would really love to know more about perfectionism, what it is, what to replace it with, how a perfectionist can think differently.  I basically want my children to know that truth about this and to be able to help them not fall in this trap.  Thanks!