Need advice: I have bad anxiety before I go to work.

I am a newer grad and have been working in an ICU for one year in June 2009. I have been getting kudos from my coworkers and compliments on how I have been doing so far. The problem is that as time goes on I should be getting more confident in my abilities but instead I am getting anxiety. I start worrying about work the day before I have to go in. I think about if I'll have a terrible night, have a difficult family, or just one of those crazy hairy nights. I work night shift and have had some whoppers so far and I have handled them fine.

I just don't know where this anxiety is coming from. Sometimes I just want to cry before I go to work. The staff is great and is always helpful. I enjoy the focused care of just the two patients and and most nights are fine. The main problem is that resources and dr's aren't around during the night which makes things crazy sometimes. I wanted to get two years experience in ICU because I have heard some specialties like that two year background. I just don't know what to do. I used to handle stress fine. I just wish I could have a job I enjoy and have fun doing. I think I'd like something more uplifting and fun, yet I like the learning oppertunities of the ICU. Any advice on how to deal with my anxiety situation. It is to the point that I hate my job and dread going to work!!!