There are two parts of the mind: the conscious and the unconscious. While the former dominates your attention, the latter actually occupies far more of the brain, influencing your mood, generating inspiration, and making you who you are, all behind the scenes.
My guest would argue that to become all you're meant to be, you have to make your unconscious mind your ally and that this may be life's most important task.
His name is Daniel Z. Lieberman, and he's a psychiatrist and the author of Spellbound: Modern Science, Ancient Magic, and the Hidden Potential of the Unconscious Mind.