Ethan Kross is one of the world's leading experts in controlling the conscious mind. He's a Professor at the University of Michigan psychology department and the Director of the Emotion and Self Control lab. He's the author of the phenomenal book Chatter-The Voice in Our Head, Why It Matters, and How to Harness It. Buy it here. You can find more on Ethan here. His book choice was Man's Search for Meaning by Viktor Frankl. You can buy it here. His song choice was U2, A Beautiful Day