I have my days and nights mixed up, as well. As a student, it must be particularly frustrating for you. I agree with those above that studying or playing a recording of classes at night when you are awake would be helpful. When you get through your school years, put "outstanding ability to do night shift work" on your resume! I don't know what causes this, but I have heard that some people have this as a "natural" sleep pattern. That doesn't mean it can't be changed if you are willing. Even knowing you don't want sleep suggestions [I, too, dislike the "bedtime routine" tips], I will offer this: I lie on one side, with bottom arm holding a book, which distracts me enough to stop the "I can't sleep" turmoil. Very often this leads to sleep, or at least I get body rest. Best of luck from one who empathizes. billieJ