You need to stop comparing yourself with other people and compare yourself to you. Other people have nothing to do with you. People have strengths that you may be weak in and you have a strengths that others are weak in. Work on your own strengths and weaknesses. Build yourself up. Be better than you were last year and the year before that.
You will never feel good about yourself if you keep comparing yourself to others or you focus on your flaws. You are not surrounded by better people, you just interpret that they are better than you. Do not worry about others and see the strengths you have. Be the best that you can be.