Thomas M. Sterner is the author of Fully Engaged and The Practicing Mind. He is accomplished: as a musician, composer and technician in various fields of music; as a recording and audio engineer; and in athletic pursuits from archery to golf. He speaks around the world on developing focus and discipline and lives in Wilmington, Delaware. Visit him online at www.thepracticingmind.com. Printed with permission of New World Library, www.newworldlibrary.com.