First let me say that the "Three Pillars of Zen" was written by
Roshi Philip Kapleau. If you are into Zen I recommend it, but I
don't think Zen is what you need. Now, if you have a preexisting
schizoaffective disorder before you took drugs, it is possible that
drugs could have exacerbated it. Cocaine is the wrong drug for you
my friend. You did not state what prescription drugs you are taking
but unless they were prescribed for your condition they didn't help
either. Pot is not a problem.
As for LSD. What LSD does is force you to look at things you may not
be ready to deal with, or are long over due and need attention. You
cannot fight it. You should not take it as a recreational drug. It
is serious medicine. The paranoia and hallucinations LSD can invoke
are similar in intensity and duration to schizophrenia. Don't get
the two confused. If you are truly having an extended adverse
reaction to LSD you need to take Thorazine. Find a shrink, tell him
you are having ergot psychosis and need some Thorazine.
If you have ever taken Angle Dust `Phencyclidine' you can lay all
your troubles at its doorstep. It'll kill you emotionally and
literally drive you crazy. If you have a faith or ever had one,
return to it. If not just pray. It doesn't matter what you call the
deity. Just pray for help and understanding and forgiveness.
Blake