A Slight issue!

Since all the chaos I had with my work being lost, and trying to redo and hand it in on time for deadline, I've had a problem sleeping at a sensible time! I seem to be rolling into bed at 8am or 9.30am in the morning, then I'll wake up again at 1pm , 2pm!.. some days I don't even go to sleep because I don't seem tired!...it's been like this all the way through the Christmas holiday, but the fact that I start back at Uni later on today is going to be a problem, as I'm still up at 5:12am unable to sleep. :-/ ..man this sucks!