We are just a ghost in the machine, we do think that we have control but at all times the physical brain is in charge. Everything we are is a hallucination, our personality is just calculated sensory input and often things go wrong with that. There are a lot of outside parameters that make the process go wrong, it is a near miracle that also things go right and that there are things like synchronised collective hallucionations between multiple input/brain interactions (we call that reality). Sometimes also the physical brain gets damaged by the ghost from the inside. I have been severly depressed for years and learned the hard way about hallucinations, but learning about that and accepting the hallucination took away that depression. As far as I see it, thinking is a form of radiation inside the brain, containing particles and waves, and those waves can be disturbed very easy