Nursing

I'm laying in bed in my scrubs afraid to go to work like a child. I keep trying to tell myself that I'm contributing something positive to the world. I take care of people, how can that be anything but good? All I feel is this overwhelming anxiety that I'm going to be dragged through the town square and quartered. I love taking care of people, serving others...but the uncertainty drains me. Am I going to have the patient that throws objects and hits? Only in his 30's and angry at the world? Or will I have the sweet but senile old woman I can easily calm with a cup of coffee and some company? I don't know why it destroys me so harshly. I want to help, I want to be productive instead of sitting at home absolutely useless but I feel defeated.