It's impossible for anyone to see or hear your thoughts, but convincing someone actively delusional of that fact is very difficult as the same processes in the brain that cause delusions also destroy your insight and ability to think rationally.
I had a psychotic episode after injecting a ketamine analogue on top of a long-acting stimulant, 4 days of sleep deprivation, and a pretty hefty session of hash smoking... When I "awoke" into the insanity, it was like being a totally different person. At the hospital I was convinced at one point the staff were reading my mind and projecting my thoughts up on a screen (which I could see with my own eyes as clear as daylight - not in a trippy way - like it was really there). They were also "projecting" the contents of my hard drive from home up on the screen. It didn't even occur to me that it could be a hallucination, despite people telling me so. But after about a week of no drugs and my natural brain chemistry returning, I soon dismissed these insane beliefs and experiences, and realised they all came from the drugs inducing schizophrenia like mental function.
If that's the way you naturally think, hard as it may be, I would try to question thoughts you have, and not trust them implicitly. Also, get diagnosed by a psychiatrist if you haven't already, trust their opinion, and remind yourself frequently you have a tendency to have these thoughts.