Hey! It gets better, I promise!!
I'm a singer, so I pay attention to my breathing all the time. When panic is at its worst, I feel my lungs burning, and my breathing becoming shallow. Though I tell myself to breath deeply, that's hard to do, because the stomach is roiling, and breathing deep only seems to make my stomach feel worse. Then, my chest would be sore for days after the episode. It was awful. I'd pay more and more attention to my breathing, and wouldn't want to breathe deeply, for fear that it would hurt. Bad thing for a singer!
In any case, singing helped immensely, because you can't sing well unless you breathe deeply! And, since I love singing, I would not even think about breathing. I'd practice for an hour without thinking about being anxious about my breath. And then, I felt great, because I knew that I had placed huge demands on my lungs, and instead of feeling worse, I felt better.
So, if you can sing, you might consider joining a choir or taking voice lessons, or just singing in the car or shower.
In any case, you will want to "desensitize" your body. Counseling can help you do this. Basically, you consciously increase the symptom gradually in a safe environment (i.E., breathe in the "scary" way, whatever that means to you). Then, you realize that nothing bad is happening to you. That way, the next time you feel your breathing is distracting you, you can tell yourself, "this isn't a big deal. I can still function and live my life the way I want to, even with this feeling." i've started doing this with my throat (the latest symptom-prone area), and it has given me a lot of confidence that my throat isn't actually going to close off, no matter how tight it feels, and that I can go on with my life.
I wish you the best! Know you're not alone in this painful and scary journey, and that there is a light at the end of the tunnel.
Sending prayers, love, and energy your way!
Paul