I know how you feel. When I was in the throes of DR/DP, I used to have fantasies about standing beneath an ice-cold water fall and purging myself of the disease. I still do from time to time.
This is going to sound weird, and possibly dangerous, but when I had extreme anxiety or panic, I found that, and stop laughing at the back, that sticking my head under water (cold water) with my eyes open, relieved the anxiety. Of course, depending on your lung capacity, it isn't particually practical!! I recall, with deep embarrassment, that once I actually lay down in a cold bath with my nephews' snorkel on. It really calmed me down. Why? I haven't the foggiest. Perhaps it's something to do with escapism, but I can't be sure. Don't try this at home! :shock: