Why do I always feel I am not worth for things?

hey there... i dont know you or your personal life, but by looking at your question, its a self esteem issue.... you say you feel like you dont match up with others, and YOU SHOULDN'T. we ALL feel this way!!! i know i used to. but as you live life you see that you are no bettter!!! or WORSE than anyone else.. use the good marks you make in school as a propeller.. that is something to be very proud of.. take a look at other things you are good at, or show interest in, and build on it.. and if people dont like you, bases on superficial things such as what you wear, how you look, etc. they arent worth your time.. so dont let people get you down... there is too many good people out there to focus on the ones who arent..... good luck!!