The proverbial beautiful mind of the proverbial schizophrenic resides in a brain that has abnormalities. This includes diminished frontal lobe activity, resulting in deficits in the brain’s ability to process information in a cognitively organized way and stopping people from screening out irrelevant stimuli. These deficits are considered to be deleterious to the brain functioning of the schizophrenic.
Anna Freud (1937) created a theory of defense mechanisms that implicated the use of repression in protecting the ego or the self from psychic pain. She theorized that these defense mechanisms are used by what Sigmund Freud termed “the ego” to reduce anxiety when the wishes of “the id" conflicts with those of society.
I've argued before that all or most diagnoses of severe psychopathology involve trauma. Trauma represents an aspect of diagnosed psychopathology, even though it may not meet the criteria for a diagnosis of post-traumatic stress disorder. Trauma often involves confrontation with death, and fear of death can bolster trauma. It's a vicious cycle.
The experience of our minds may be shaped by belief. The idea that our minds are whatever we imagine them to be may seem like an assertion that is hard to prove. But confidence is crucial to learning and knowledge, so the term “imagination” in this sense simply connotes a confident belief in our constructed mental processes and our minds’ content.