Stop/Recover from panic attacks?

Kaylee
I had a huge panic attack about a week ago, only the second I've ever had but scary enough to send me to the ER in an ambulance, convinced that I was dying. Since then I've been on edge and have had at least one smaller one. Does anyone have any technique to successfully stop one before it happens? Or anything that helps you recover afterwards besides going to sleep, which is the only thing I've found that helps me? I'd appreciate any advice, thanks so much ❤