The problem with deep psychosis is that the sufferer often doesn't know they are psychotic. Add in the paranoia from meth, and you've got a real mess on your hands.
I've always suspected that it wouldn't take much for me to cross the line over into schizoaffective, so I've made a real effort to stay in tune with my thoughts and sort of monitor them.
I also would never use disassociative drugs such as ketamine and others. The only disassociative I've used is dental Nitrous Oxide, and I completely freaked out, I also won't use psychedelic drugs or 'speed, especially meth. Never tried those due to fear for my mental health.
