A psychological thriller/mystery putting a guy's coping mechanism and the world he sees to the test against reality of the world around him.
I went with more of an abstract of the possible distortion or discrepancies of how we see the world through our coping mechanism.
Also, accented by using a mix of clean text and messy text and background

Also the strong colors makes easy to spot on online retailers' thumbnail and bookstores to invoke the curiosity of an unsuspecting reader to check the blurb/book's page