the question seems very simple, but really hard to answer. it's difficult for everyone to tell if they are really happy in heart~ and different ideas fit different person. but i think if you cannot get back on the track, you needn't to care so much about it, that just make it worse. just try to relax, do something , anything you wanna is ok. and open your heart to yourself, you have to know what you really wanna, and so that you could find a way to solve this problem. sometimes i feel rather terrible and i have to do many thing i hate at the same time~~ when i got in such situation, i do nothing. i just keep myself free, wo do anything i like, even lying in bed all day long~~ do you understand? you can do anything to relax yourself. when you are in the best mood, you still have to face all the problems, don't worry, just take it easy~~ do what you can do now, forget about the next minute. everything will finally goes well. beleve in yourself . you are the hero if you always beleve in that.