I don't think anger is such a bad thing...

I've realized that anger can defend your self-esteem. When I was a kid and was made fun of by siblings, I would get angry at them and take out my anger in healthy ways. My siblings were the only people who I would allow myself to get angry with, since my family wouldn't allow me to show negative emotions in any way (which was wrong of them). Sometimes I used that anger to direct a logic-filled rant my siblings' way.

I realize now that as an adult I have forgiven them. Maybe that anger recognized what they were doing as wrong, and I now realize they had their own problems my parents didn't help them with. So despite the problems from my childhood lingering with me today, I think my anger over my siblings helped me put their treatment behind me.