Georgie Girl, you mentioned that you're tired of fighting anxiety. The key is not to fight it. You release more adrenalin when you fight the symptoms. I know it's not easy, but you must learn to "float" through the feelings/symptoms. I've had anxiety for about 25 years. Once I stopped watching my body and stopped worrying about heart attacks it got better.
Twenty-five years later, I have anxiety everyday. I will probably always have anxiety. The cure is to relax with the symptoms. Do not fret over them, wonder why they're happening, and do not watch your body. Keep your mind calmly busy. Do you exercise? Have you given up sugar and caffeine? These things will help.
I have a feeling that your job will go back to being tolerable if not enjoyable, when you learn to ignore the symptoms. As I said, let them happen. They can not hurt you. Take care of yourself! Good luck.
Generalized Anxiety Disorder
60 mg. Prozac, Ativan as needed.
"Education is not the filling of a pail, but the lighting of a fire."