Most fears of rejection rest on the desire for approval from other people. Don't base your self-esteem on their opinions.
No one else can take risks for us, or face our losses on our behalf, or give us self-esteem. No one can spare us from life's slings and arrows, and when death comes, we meet it alone.
Anger is a manifestation of a deeper issue... and that, for me, is based on insecurity, self-esteem and loneliness.
Outstanding leaders go out of their way to boost the self-esteem of their personnel. If people believe in themselves, it's amazing what they can accomplish.
Your self-esteem won't come from body parts. You need to step away from the mirror every once in a while, and look for another reflection, like the one in the eyes of the people who love you and admire you.