It sucks to have to switch night back to day....but that's the price you pay to only work 35-40 hours a week. It seems like you work more because you have some hours that are "lost" to you because you are sleeping or can't function because you need to stay up to get "back on schedule."
Every body deals with it differently, and every group has a different scheme. Some hire a couple of young guys to do most of the nights and pay them a little more. Others do blocks (4 days, then 3 days off, 4 evenings, then 3 days off, 4 nights then 3 days off etc.) And others do the circadian thing where every day its a later shift until you are working a night shift at the end.
The good news is you realize there's nothing magic about 8 am to 5 pm. You can get lots of stuff done at other times of the day. For example, I seem to get more reading done when I'm working nights because I can read after my wife goes to bed and before I go to work.
Unlike the previous posters, caffeine doesn't seem to help me much. Making sleep a priority when you can do it does help. So does planning ahead. (If you are switching evenings to nights, stay up a little later that last evening shift, then it'll be an easier transition.)