Curious to know if anyone here has had delusions that have lasted long term. If you feel like sharing more… what did you believe, how long did it last, and how did you overcome it?

One of my best friends is schizophrenic and he’s believed that he’s a prophet for several years now. He is diagnosed as schizophrenic and court ordered to take medication but he still doesn’t believe he’s ill. 

Just wondering if there’s any chance that he’ll ever come out of this. His entire identity is now pretty tied to his false beliefs, which is concerning to say the least. 

Thanks in advance for any responses. It’s painful to watch my friend suffer with no way to help him.