Picking and Social Anxiety?

I sometimes think part of the reason I pick is to "protect" myself from the world. If I'm stressed out about some sort of event or party, I pick. It keeps me feeling insecure, so I don't go out of my way to make new friends or be "the life of the party," and maybe in that manner it keeps me from being rejected or getting hurt. Kind of like a viscous cycle, right? Heres a great example: A few weeks ago I really hit it off with a guy, we talked all evening, and I wound up giving him my number. So after I got home that night I looked at myself in the mirror and wondered what it was exactly that he saw. Then I tried to "correct" a few facial flaws and by the time I was done.... I had raw patches everywhere. my face was red,blotchy, and swollen with a few oozy patches. when I saw myself in the mirror I thought, "no, i'm not beautiful. He was just a nice guy trying to make an ugly girl feel a little better about herself." Then I started feeling humiliated that I was so willing to believe his "lies," and how pathetic he must have thought I was. So when he called the next day I didn't answer, and I never called him back. Hows that for social anxiety? I do it all the time. Especially when I'm about to enter a new situation, like the first day of school or a new job.