Expectations meant to be broken?

I fear what certain people think about me. I have this "third-wheel-7th-grade-all-over-again" feeling that I'm too much and not enough at the same time. Like there is a party that I havn't been invited to because I'm not cool enough, REAL enough, pesimistic enough, rebellious enough, laid back enough, smart enough, etc. I have this sneaking suspicion that sort-of creeps up like prickles on the back of my neck that some people see me as sheltered, nieve, closed-minded.
What do I fear most? That they are right.