I did days and night shifts for 12 years. the most important thing was curtains with black out lining and black out blinds as well - proper dark during the day. after first night I was always up early and then after that I could sleep most of the day. always after my last night I set my alarm for half 11 to get up so I would be able to sleep the next night and get my body ready for day shifts. have only worked day shifts for the last 3 years and at first had trouble having a lie in on my days off. now I now know the secret and its just being very stuborn when you wake up - DO NOT open your eyes - not even to look at the time, just keep them shut and I find I soon go back to sleep.
Oh and the most important thing is to have a mega comfy bed - worth spending a bit of money and get it right seeing as you spend 1/4 - 1/3 of your life in the thing