I need to find books on self-improvement?

Any time you sincerely want to make a change, the first thing you must do is to raise your standards. When people ask me what really changed my life, I tell them that absolutely the most important thing was changing what I demanded of myself. I wrote down all the things I would no longer accept in my life, all the things I would no longer tolerate, and all the things that I aspired to becoming.
Anthony Robbins (adapted)