Quote from 377OHMS:
...I've had a few other thoughts too. One of those thoughts is that you cannot have gone very far in your profession if you are assigned to graveyard shift. You might be some kind of shift supervisor but you are certainly not in managment or otherwise in the decision making hierarchy of your facility. Those people work day shift exclusively.
Looking at that a bit deeper it occurs to me that nobody schedules surgery for graveyard shift, nobody does any non-emergency diagnostics on graveyard shift. The only thing happening medically on your shift is childbirth, incoming emergencies and emergencies occuring among patients who are already admitted. Some medications are being administered according to schedules. Critical patients are being monitored. Some cleaning of the facility is ocurring. My point being that there isn't much activity of any importance going on.
So... what happened? Did your attitude kill your career? Did you fuck something up medically or behave inappropriately towards your coworkers? It had to be something because any competent person would certainly have advanced beyond shift supervisor given your age, training and experience.
I'm going to take a wild guess and say that it was your attitude...