Xanax has a bad reputation in the recovery community because it is highly addictive, causes severe withdrawals, and lots of addicts have used it in conjunction with their DOC to intensify affects.
That being said, as with any medication, you have to weigh the benefits of a medicine against the negatives. Only YOU know whether Xanax is the right fit for you. Do you go to counseling? If yes then does your counselor help you with different natural stress and anxiety relieving techniques? If no, then maybe it would be a good idea to add that into your tool box.
As long as you are honest with your doctors about your past alcohol abuse and let them know any physical or mental health conditions and you come up with a plan that works for YOU then do whatever is needed to live a productive and healthy life.