Dr. David Henderson is a board certified psychiatrist, author and speaker. He is the founder and president of Four Stones PLLC, a mental health consulting practice in Dallas, Texas. For five years, Dr. Henderson served as the Department Chair of Psychology and Counseling at Criswell College, rebuilding its Masters in Counseling Program and starting the undergraduate major in Psychology. He also helped to develop a fully online counseling curriculum for the school. In addition, Dr. Henderson has served as an adjunct professor of Psychology and Counseling at Dallas Theological Seminary. He is a member of the board of directors for Drug Prevention Resources, Inc., a nonprofit organization dedicated to preventing youth substance abuse. Dr. Henderson has presented nationally and internationally at conferences for the American Psychiatric Association, the American Academy of Psychiatry and the Law, The Christian Association for Psychological Studies, and the Christian Medical and Dental Association. For more information, you can visit his website, www.drdavidhenderson.com.