To be a mental patient is to be stigmatized, ostracized, socialized, patronized, psychiatrized.
To be a mental patient is to have everyone controlling your life but you. You're watched by your shrink, your social worker, your friends, your family. And then you're diagnosed as paranoid.
To be a mental patient is to live with the constant threat and possibility of being locked up at any time, for almost any reason.
To be a mental patient is to take drugs that dull your mind, deaden your senses, make you jitter and drool and then you take more drugs to lessen the "side effects."
To be a mental patient is to watch TV and see how violent and dangerous and dumb and incompetent and crazy you are.
To be a mental patient is to be a statistic.
To be a mental patient is to wear a label, and that label never goes away, a label that says little about what you are and even less about who you are.
And so you become a no-thing, in a no-world, and you are not.