I have nearly crippling anxiety as well, and also have a great desire to stay away from the psychotropic meds. I managed to find a sympathetic MD who advised that I try changing up my diet before going the RRSI route, and I've had pretty good results. There are plenty of links for anti-anxiety diets, but generally they're along the line of avoiding the obvious culprits of sugars, alcohol and caffeine, as tramel mentioned above (and as BYU mentioned, lots of exercise is also always included in that recommendation).
This here's the specific book my doc recommended, for whatever it's worth to you. Aside from just plain ol' food changes to your diet, it advises taking a TON of dietary supplements as well, which turns some folks off. I hope you find some relief Flasch, whatever solution you may chase.