Mark Gregston

Mark Gregston has been helping parents and teens for 38 years. He is the founder and executive director of Heartlight, a residential counseling center for teens, which has helped more than 2,500 struggling adolescents. Mark spends 90 percent of his weekends teaching, and also hosts the "Parenting Today's Teens" radio program. Mark is happily married with two children, three grandchildren, one dog, and too many horses.