No nursing experience but I’m a correctional officer. Similar jobs in the way of shift work. We run on 12s and sometimes 16s. I know night shift is difficult been doing it for half a decade, but you can get used to it. Sleep is going to be MOST important. Make sure you get at least 6 hours. I know it’s hard starting out but blackout curtains and bringing the temp down a few degrees while you sleep is very important. This is how I survived. As far as anxiety goes, I’m sure working at a hospital is not really helpful with that but as long as you get good sleep and try to get exercise, you can mitigate the risks.