Check out _The Eden Express_ by Mark Vonnegut (son of Kurt Vonnegut). It is a memoir documenting the author's own psychotic breakdown. Reading this gave me insight into the human mind and what it's like when it goes off the rails.

You say "anything that transforms me into a smarter, wiser person" so I'll add Eliezer Yudkowsky's fanfic _Harry Potter and the Methods of Rationality_ (http://www.hpmor.com/) The whole HP universe is re-imagined, except Harry is smart, a scientist, and empowered with rationality. It is both entertaining and an introduction to the art of rationality.