wee try not to be that way if even you realize that. Only you can change so stop caring what other people think. People are sometimes mean but do not pay any attention or you will never get out of that state. be confident. I'll post a link to a site. It helped me a lot and you can write questions (any type)and people will gladly answer. maybe you'll even make friends :)

http://www.becomegorgeous.com/