Evangelical pastor Richard Duane "Rick" Warren was born in San Jose, California on January 28, 1954. He received a Bachelor of Arts degree from California Baptist University, a Master of Divinity degree from Southwestern Baptist Theological Seminary, and a Doctor of Ministry degree from Fuller Theological Seminary. He worked at the Texas Ranch for Christ before founding the megachurch Saddleback Church in Lake Forest, California in 1980. He has written or co-written several books including The Purpose Driven Church, The Purpose Driven Life, and The Daniel Plan Cookbook: Healthy Eating for Life. He has lectured as a theologian at many universities and seminaries and was chosen in 2008 by President-elect Obama to give the invocation at his inauguration ceremony.
Mark Hyman, MD is a physician, scholar and author. He is the founder and medical director of the UltraWellness Center and a columnist for The Huffington Post. Hyman graduated from Cornell University with a bachelor's in Asian Studies. He received his doctor of medicine from the University of Ottawa and completed his postgraduate training at the University of California, San Francisco. Hyman served as co-medical director at Canyon Ranch in Lenox, Massachusetts from 1996-2004. He opened the UltraWellness medical center in Lenox. In December 2013, The Daniel Plan a book Hyman co-authored with Pastor Rick Warren and Dr. Daniel Amen, became number 1 on the New York Times bestseller list.