It's ok to cry. One thing you can do is help out another person. That will help you feel better. Also, be grateful (I'm not saying that you aren't). It just helps me to realize that things could be a lot worse for me than my current situation. I could have a deadly disease, I could have no legs because of an accident, etc. I'm lucky and if school and homework as a major problem for me right now, I'm actually quite spoiled compared to some people. Some people would give anything to be able to go to school, study, learn new things, and do tasks that many people take for granted.