I'm a paramedic, bipolar and work nights. I feel like I have a trifecta of failure going on here. It helps, if you have to keep your night schedule, to keep your room as dark as possible when you sleep. I have blackout curtians. And keep it cool in your room. If possible, keep your daytime sleep schedule even on your days off. I sleep during the day even on my days off. (now,I am in school, but my classes are all afternoon). It will be hard for a while but you can do it. I've done nights for 12 years. I even eat breakfast in the evening its weird, but I swear it's not as miserable as one might think. And 24 hour grocery stores are really interesting at 3am