Hi Lisajane,
Sorry for not responding earlier. I can tell you what I did, but I think it really depends on what at work is specifically giving you anxiety. For me, the first and biggest things were my coworkers and boss. My fear level around my boss was higher, so what I did was come in just once a week for 15 minutes during coffee break to visit with coworkers. Then I gradually increased it so I would come in more frequently for coffee breaks. Then, when I felt more comfortable with my coworkers, I telephoned my boss and spoke to him over the phone. Then, I made up an excuse to meet with him and scheduled a meeting in person. Doing these things made me feel comfortable enough with my work environment to consider going back to work. So now I am going to work 3 times/wk for 2 hrs at a time. I have done this successfully for almost 2 weeks now! Hope this helps.