Why do I have such low self esteem? It's so annoying?

A few months ago I went through a great big depression. I was cutting myself,lost in interests and associates, listening to depressive music and even watching death videos (yikes!) and no one was there to help but myself. So i guided myself out of that depression state but now I m kind of having this low self of esteem going on where I ll make remarks that I m ugly or get very sensitive when someone calls me ugly. I don t feel great about myself and I find it hard when I m always comparing my life of myself to someone else. It sucks and I m tired of it. What should I do?