Wow I can really relate... like wow, just yeah. I've always had some issues but my psychosis started up when I was 13 or so, hospitalized at 14(I think, don't remember too well) and dx'd with the same... depression with psychosis(which was... completely wrong...) After I attempted suicide when I was 15 I was dx'd with schizophrenia but since then I've had lots of issues with my dx... doctors don't know what they're doing(bipolar, schizoaffective, blah blah blah). Things got significantly worse for me around the same time as it did for you, I was 17/18 and things just got bad. I stopped engaging in life at all, and that's been pretty constant since then though I've had some periods of doing a bit better. Just yeah... wow... it's rare that I meet someone I can relate to like this.