Having been through the anxiety and panic attacks and come out the other side, a couple of points:
– Good on you for such a brave post. I felt extremely daft telling people like I was defeatist as tough northern blokes don’t do that kind of thing… however once I did, it is surprising how many have been through this stuff.
– There are online CBT programmes you can register on to do in your own time which may be of use to support your sessions. I found researching loads about the psychological side of it on the Internet helped immensely.
– Motivation is a big issue but excercise really, really helps. Even if it just means getting out on your own and wasting some of the adrenaline.
– I found stopping caffeine helped, but if you are a tea guzzler, don’t just stop! Ween off it! Sounds silly, but those who know, know!
– You sound a reasonable, intelligent (and you might not think it now, but) level headed chap, so remember… you will get through it!
– Good luck dude.