Gregston, Mark

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