Boy can I relate to this one!
I've been dealing with this since I was 20 years old and I still havent figured it out. Nerve drugs help for awhile, but then there's that dam hangover that always comes with them. I see a psychiatist whom I refer to as the ' witch doctor ' who gives me more pills to take... ugh!
I've tried smoking pot, but that just made me eat everything in sight. I did the exercise thing, I ran, I walked, I cleaned, I screamed, I got right pissed off at the world! Still, I could not control the fear contactions in my gut nor the shakes that took over my limbs. Meditation works a bit but doesnt last long enough. Now, I want to sleep and cannot. I want to be and feel normal ... is that possible? At this point in the game ... I don't think so. Good luck to you. If you figure it out ... drop me a line.