Mark GregstonMark Gregston is the founder of Heartlight, a residential counseling center for struggling teens and is the author of several books written from his 40 years of working with teens and parents. He is a popular speaker, and the host of the "Parenting Tday's Teens with Mark Gregston" national radio program heard on over 2,000 radio outlets. Mark leads Families in Crisis conferences, Tough Guy & Drama Queen seminars, and spends 200 nights on the road annually, helping parents understand and prepare for this contrary teen culture. Mark and his wife, Jan, have been married 43 years, and have 2 grown children and 4 grandchildren. Read More Read Less