Other responders seem to be coming from the perspective of the parent in them. Science has shown that kids have difficulty relating to the advice given by parents. Kids who have grown up in an environment lacking enrichment develop a bias against authority figures like parents, and become very skeptical and/or rebellious to authoritarian attitudes. While some of the above advice may be helpful, it may still be ignored because the delivery method was botched. Also, because of the above, mate23 is less likely to trust me too, statistically speaking. I am willing to give this fine young gentleman helpful advice, but knowing I'm probably joining others in banging my head on the wall is demotivating for me.
The most important thing about growing up is the learning process, which is why parents send their kids to school. You knew that. What you may not have known is that the most important part of learning is failure, but that's not enough. In order to learn from our mistakes we need feedback on what we should have done instead.
Paradoxically, today's school system punishes failure and offers very little feedback regarding correct behaviour, and many families function similarly. Popular culture suggests that failure is the worst thing you can do, but they're wrong. The ONLY path to success is through failure. Failure is never bad or wrong. There are no bad students, only bad teachers and parents. HOWEVER when you take into account that the teacher is also a student, learning how to be a better teacher, and the people who teach teachers to be teachers are learning their job too, no one is really to blame. The problem is at a cultural or societal level.
Find people of any age who live in a different world. A connection with an individual that understands the psychological principles of nurturance. You deserve to be encouraged, supported, incentified and rewarded for your effort, and how much you improve yourself, not how you compare to others. This is the difference between mastery and ego. When teachers focus on ego, students become competitive, jealous, aggressive and boastfully proud with "in your face" remarks. Mastery is about cooperation, empowerment, self-efficacy, confidence from within, and humility.
Make some choices about what you want, ask and plead with school officials to provide the kind of environment that you want, and if they refuse to help you there then ask to move to a different school where you can feel comfortable.
You have the right to be happy. Don't let anyone tell you otherwise!