answerJam

also, maybe try something structured to come out -- like tutoring kids or something.

I don't think it's anything to worry about. I was super extroverted as a kid and now I'm going the other way. Structured environments, especially classrooms, make it easy to strike up conversations. Maybe your problem is more with crowds, since you're using plurals? It's not too hard to find small groups or clubs that might be interested in what you're interested in, which would make them easier to talk to.

I think everyone is afraid of getting close to people at some extent. I have the same problem right now. I'm usually an outgoing person but I just started my first year of college this semester and I talk to a few people but I dont have friends. And the days I do talk its no more than a few words. Its sad. Really. But in my experience I think it's because of the last friendship I had. She really screwed me over. Has anything like that happend to you? I think the first step to knowing the answer to your question is looking back and finding what causes you to hide. My plan is starting over next semester and going to parties and more social events instead of just hanging out with my current friends. New friendships can cause great things although you may cross through some that really suck and hurt you. If you don't go through all those people then you will never find the few people you would like to stick to. Sorry i wrote so much xP lol