I have read the report by the British Psychological Society on Understanding Psychosis (it is very long). It is brilliant. Anyone who wants a different approach to dealing with psychosis should read it.
Over use and reliance on heavy meds cause some of the negative symptoms in my experience. Also I've noticed my, shall we say 'eccentric' take on the world, reality and perspectives seem to be more accepted as I've got older - makes me wonder how many of the positive symptoms are merely deviances from a cultural normative shared reality? Not saying illness isn't real, mental distress is the realest thing in the world next to limb amputation, but do doctors know so much to make a diagnosis of serious illness in the absence of anything biologically objective at all?
I've skimmed the report, and the one on bipolar disorder when they were released. Don't have the concentration to read the full reports at the minute though. There were some people I really respect involved in the psychosis report. Whether any of it trickles down to the majority of psychiatrists remains to be seen but it's nice to see other perspectives being put out there as opposed to, "your brain is fucked, dumb it down with meds!"