Most people would probably say that makes you a good student. Me, though...

[ ... well. it's not a proper school experience without sleeping through a class or five. maybe fifteen. let's just say the number of times he's been caught snoozing during a lecture far exceeds the number of fingers on one's hands. maybe even toes on one's feet. ]

If you let yourself think too much, it kinda bogs you down. Makes it hard to sleep. So if you're the type to get stressed easily, I can get why you never had much luck before.