I think you should set a goal. If a man has a target, and can continuously strive, the mood is relaxed, wish you good luck

That happened to me when i went away for college. The cure for some reason was going out more. Making friends in class. Motivate them to go to class and they'll do the same. I did all my homework during the day and at night i went over to my friend's apt and played video games. I'd occassionally go dancing, but it just took my mind off of school sucking and i tried a bit harder cuz i saw my friends getting A's. I wanted those grades too. So i got em. So really it's hang out and study. Combine those two things if possible!
-emm