I do occassionally take Xanax. I've taken it after miscarriages and what it did for me was made me stop trying to keep wallowing in how sorry I felt for myself. Without it, I would start crying and then instead of letting that feeling pass, I would keep on thinking of more things to make myself feel worse so that I'd keep crying. Basically, just totally wallowing in self pity.
Right now, I have a little bit of it to take if I need it because I have this uterine (sp?) biopsy on thursday. Several people have told me how it is an excrutiating pain, worse than child birth, etc. SO, I may be getting a little worked up and if so, I'll take a xanax or two. I will also be taking some viccodin about an hour before the biopsy
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That said, I am a gifted worrier as it sounds like you are. Having had xanax for temporary issues, I would not choose to be on it all the time. But, it may do just the trick for you.
Good luck!