I have had clinical panic disorder for 35 years. Some wonderful books and psychologists have helped BUT I always carry an anxiety med (prescription) with me. It works in 10 and I have learned to think of it as just how i am. You can argue all kinds of reasons eg PTSS etc but as my therapist says...quit all the inner dialogue and just say do not be ashamed of ot. It has to be the worst torture one can experience. I have also found that to verbalise is great so if i feel it coming on I stop the next person and just say "hey, I suffer from anziety disorder and it helps if I speak to someone...do you mind?" No one has ever refused and many have been happy to share stories of similar torment.