Frank Minirth, MD (1946-2015) was president of the Minirth Clinic in Richardson, Texas, and an adjunct professor at Dallas Theological Seminary. He was the author or coauthor of several books, including Happiness Is a Choice and A Brilliant Mind. For more information, contact www.minirthclinic.com. Paul Meier, MD, is founder of the national, non-profit chain of Meier Clinics (www.meierclinics.org, 1-888-7CLINIC) and a guest on numerous radio and television programs. He is the author or coauthor of more than eighty books on family, relationships, and mental health that have sold millions of copies, and is a nationally and internationally sought-after speaker.