Be proud of who you are without being proud.
Don't worry about what everyone else thinks. I hate to burst your bubble, but in all honesty, they probably don't notice as much as you think they do.
Just don't be dumb.
Stand up for what you believe, as long as you know what you're talking about.
Appreciate what you have. Chances are, someone else doesn't. (I'm talkin' to you, people with time-management skills . . . arrrrrg . . .)
Don't let what you think get in the way of what you know.
Use your talents in ways that will bless the lives of other people. Don't waste them on worthless endeavors. For example:
If you're going to spend your time and energy doing things that will absolutely never ever never work, make sure it'll entertain the rest of us.