ok, since I don't think you have PROOF that you did, lets assume for a second that you did NOT damage your brain or any part of it...
that would indicate that the psychosis is all in your head,
the brain is so powerful, it can manifest sickness in someone who is not sick, but truly believes they are... so lets say you took so many different drugs it change your perception on every day life, to where the drugs, may not be completely out of your system, and cause little things to happen, that make you think you damaged your brain (like flash backs, or De Ja Vu) so then you start worrying about it, and next thing you know, your seeing these effects long term, simply because you convinced yourself it was psychosis...
I've tried Salvia, Acid, Mushrooms, Pot... and through all the salvia, and everything never had a bad trip, I personally believe its because I have it set in my mind, that I understand what I'm doing, and there is no reason for it to turn bad... these are mental drugs, they mess with your mind, hell, its why we put them into our systems...
its not always a physical thing or drug that can cure the mental problem...
I'm not saying don't look into nootropics.... but if there was anything to them curing, or even helping psychosis, I think a lot of manufacturers of these substances would LOVE for them to be able to be studied and known for that, and there would be a little more information on it... because from what I've read, companies have a REALLY hard time trying to get FDA approved, and released and all that...
and because I believe that, I also believe that you made yourself think the nootropics helped, so they did, BECAUSE its a mental thing...
I could be wayyyy off in left field, as hey, I do drugs too, and I'm no schooled on this stuff, but its what I believe
just saw your question on CBD's
CBD (Cannabidiol) increases some of the effects of THC and decreases other effects of THC. Larger amounts of CBD tend to relax both mind and body, and decrease feelings like anxiety, nervousness, and paranoia.
Cannabis that has a high level of THC and low level of CBD will produce a very strong cerebral high. The body may feel more physically energetic when compared to ingesting cannabis with larger levels of CBD.
Cannabis that has a high level of both THC and CBD will produce a fairly strong cerebral high. The body will feel somewhat relaxed and heavy. At lower dose sizes, physical activity is possible (with effort).
Cannabis that has low levels of THC and high levels of CBD will produce more of a stoned feeling. The mind feels relaxed and dull, the body feels relaxed and heavy, most people do not like to engage in physical activity.
found that on google, and this from a cannabis dispensary near where I live