I don't know. I shut down around the more social, outgoing people. It's partially a vicious regression of awkward self consciousness, and feeling ashamed about said self consciousness.

The other part is dreadful boredom, which I know sounds way arrogant, but I'm not saying I'm bored because I think I'm better (though that's part of it). I also seem to lack something, not sure what. I've heard about people with small souls and no chests, and I think that's me.

Well, remember Paris Hilton's advice: to appear to be interesting, say as little as possible. So maybe you have the wrong perception of yourself, and appear more interesting to the social outgoing people than you realise - without jumping through hoops.