@GeneralRelative, you are probably a difficult patient for therapists because of your high intellectual capabilities and expectations. Regarding psychosis, of course we cannot diagnose on here, but just to let you know that from what you have written so far, you only exhibit a general existential crisis; there is no evidence of delusions. How do you define psychosis? What makes you believe that you are descending into psychosis? What symptoms are you having? You wrote about multiple therapists in the past 10-15 years, but do you have a medical prescriber? If indeed you are entering psychosis, you need a prescriber. How are you paying for your therapy if you are unemployed with no income? Do you have savings? Do you have health insurance? Can you afford a psychiatry? Why aren't you on the job market? Is it because you need to help your relatives full time?

These are some questions that your posts raise for me.