So sorry, Falconbird. I had severe panic attacks after a dreadful couple of years too. My doctor referred me to Cognitive Therapy for six months.
It teaches you how to think differently about things, and how to cope when a panic attack happens. Basically, it's about realising that a panic attack won't kill you, and learning how to talk yourself out of it with certain words/phrases, and very importantly, how to breathe properly.
Where do your panic attacks happen mostly? With me, it was always in public, supermarkets in particular. I had to learn that I would not actually have a heart attack, as I imagined, and I had to tell myself this, out loud if necessary. And breathe slowly and deeply, telling yourself all the time that nothing awful will happen. At first, I used to abandon my shopping and leave the store, but gradually learned not to do that. It's a long slow process but it worked for me. I get very few attacks now, but when I do I can cope with them.
Also, my doctor prescribed anti-depressants for about 18 months. In some ways I wish I was still on them as they made me feel so much better.
I do wish you the very best of luck and hope you can overcome these feelings.