How to get over or handle really bad anxiety?

Asked by livestrong (213) September 20th, 2011 from iPhone

I couple years ago when I was shadowing a nurse I fainted. Ever since then I get really bad anxiety when I first start off at a new hospital. I noticed this all the time during clincals as a student nurse. Today was my first day as a new nurse and again my anxiety got the best of me. It’s like I am consantly working myself up and I don’t know what to do. I start feeling real hot then nauseus then my vision starts tunneling. This is the worst what can I do to get over this anxiety of passing out again?