Twenty years ago I had job stress anxiety on a fairly new job (been there two weeks) where I was an administrative assistant to a group of people. I got so stressed and anxious that I was about ready to quit when I got the idea to do the behavioral therapy.
After being recommended to a therapist, we had one on one sessions twice a week. The most important thing she taught me was *boundaries*. She let me see that my trying to please everyone I worked under and not being able to do everything was what was giving me the anxiety (I even got sent to the emergency room once because I thought I was having a heart attack).
She helped me work through ways to draw mental boundaries and verbal ones where something was not possible. She asked me to think of worst case scenario. I did not snap to a command for one particular person that I would get fired? Then if that happened, it was not the job for me. Just examples of things I learned and I was able to deal with the job.
I worked there for five and a half years, and would still be working there if we had not needed to move to where we are now out of that state.
I really recommend it. It changed my perspective on control and control is a major cause of conflict when you have anxiety.