L. Ron Hubbard was addicted to psychiatric drugs from an early age until the day he died. Even though he told his followers not to take psychiatric drugs, he did so himself to the extent that he was addicted to them. They are the source of the very strange "OT" levels on which people are expected to talk to the souls of dead space aliens called "body thetans".
He was well aware of the mental problems he was having. Until he "invented" Dianetics he had no money for psychiatric help and so he once wrote to the Veteran's Association and begged for psychiatric help.
He wrote this letter:
This is a request for treatment . . . After trying and failing for two years to regain my equilibrium in civil life, I am utterly unable to approach anything like my own competence. My last physician informed me that it might be very helpful if I were to be examined and perhaps treated psychiatrically or even by a psycho-analyst. Toward the end of my service I avoided out of pride any mental examinations, hoping that time would balance a mind which I had every reason to suppose was seriously affected. I cannot account for nor rise above long periods of moroseness and suicidal inclinations, and have newly come to realize that I must first triumph above this before I can hope to rehabilitate myself at all. I cannot leave school or what little work I am doing for hospitalization due to many obligations, but I feel I might be treated outside, possibly with success. I cannot, myself, afford such treatment. Would you please help me?
Sincerely, L. Ron Hubbard