I was wondering, too, about depression. Also, are you getting enough sleep? Most college students don't. You might consider going to a campus counselor to get some suggestions.

I knew a girl when I was in college who never went to class. She finally went to the counselor and he put her on a system where she would reward herself for going to class, by doing something like going out to eat when she went to her classes that day.

True, some classes are boring, but I took copious notes and that kept me occupied during the class session--even if the prof wasn't really talking about anything I thought might be on the tests!