Well, generally thoughts of naked women su-
Oh, wait, you meant the other kind of up in the morning, sorry.
I go to Uni myself, and given that I'm nearly always drowsy as fuck getting up no-matter what kind of night's sleep I've had, I've got a neat little system going:
1) Set alarm nearby for 3 hours before first lecture.
2) Wake up on alarm, and set alarm for 20 minutes later. Relax.
3) When that goes off, go for 15. Relax.
4) Then 10. Relax.
5) Then 5. Relax.
6) By that point, you should be awake, with two hours to get your ass out of the bed and ready.
So long as I don't fuck up with the alarm setting, it works like a charm for me. I guess you can have another alarm far away set for 2 hours before your first lecture if you don't trust yourself, but hey, your choice.
Also, decent night's sleep. And yes, doing that in uni is like doing it in a lion cave in the savanna, but hey, it helps if you can do it.