You Have a Brain: A Teen's Guide to T.H.I.N.K. B.I.G.Eight proven principles to help you overcome your self doubt, conquer your fear of the future, reverse negative thoughts about yourself, and hurdle any other obstacles standing between you and your dreams. But instead of letting his circumstances control him, Dr. Carson took control of his attitude and actions, leading to his discovery of eight straightforward but revolutionary principles that helped shape his future. In You Have a Brain, Dr. Carson