I agree with what the others have posted about working as a nurse so I'm going to focus on something else: You mentioned feeling sad and not being able to smile, feeling tired all the time, etc. What are you doing to recharge YOU? Obviously you are studying a lot, because you mentioned a high GPA, but you don't have to spend a lot of time and money to give yourself a break. Taking a walk, taking a bath, watching a movie, or reading a trashy novel that has NOTHING to do with nursing(my personal fave) will help you keep your sense of self intact.
I don't think this gets emphasized in nursing school enough-I know it isn't in mine. We have a stressful profession and we pour ourselves out for our patients every day, but most of us learn the hard way, IF YOU DONT TAKE TIME TO UNWIND, YOU LOSE THE ABILITY TO BOUNCE BACK.
Summersent, please keep posting and let us know how you're doing. We're rooting for ya! :nuke: