Welcome to Healing Well and the A & P Forum.
I am sorry you are experiencing anxiety attacks. During an anxiety attack, focus on taking very slow, deep breaths. Avoid breathing fast and shallow. It takes concentrating completely on your breathing but this method works for many people.
I am sure other members will have some other helpful ideas for you and again welcome to the family.
Good Morning Chow
Xanax is an anti-anxiety medication not an antidepressant. Sounds like your working on all the right things, keep it up. Keep posting as the support here is awesome :)