I've come across this site a few times recently and have always kind of 'swept it under the rug'. But in light of my theory on always keeping the door open for new treatments, I figured this wasn't exactly fair and decided to check it out.
This site is "dedicated to helping people who have significant trouble with fears, phobias, and anxiety. We offer free self help information you can use to foster your own recovery; a workbook for people with panic attacks and phobias..."
I think the workbook idea is nice since you could use it as a journal to track the stress which lead to either a full blown panic attack or just anxiety. It also offers a guided program to help beat the anxiety and tricks to aid you. They also teach breathing exercises as well as lectures and workshops. Sounds plausible. It's always interesting to see and learn how others deal with their anxiety issues. I find it comforting, really. Like, I've said before, it's nice to know you're not alone in this.
This might a nice supplement to other forms of treatment. Maybe give it a shot and peruse the site a bit. You never know, it might lead you to an effective relief exercise or lesson.