My poor body image and self esteem is getting so bad that I can't watch TV or look online without my mood plummeting because of seeing pretty women and feeling bad about myself.

I can't even go on Facebook, because I look at girls I'm friends with and compare myself to them CONSTANTLY.

At the gym I get depressed if I see a guy check out a girl. I think "why doesn't he look at me? Am I ugly?"

It's getting out of control, I don't know what to do. Any suggestions? Please please please help me out.