Remember that people who would judge you by the way you look or what you have are too shallow to waste your time on. Try to be a good person, with honest, respectable values and other good people will be attracted to you. They will be your friends because they appreciate what you are, and won't worry about what you aren't.
I know it's hard to see the "cool" people seeming to have all the fun, but believe me, they are just trying to mask their inner fears and ugliness.