Book excerpt: Best-selling author Dr. Gregory L. Jantz offers hope and help for parents of teens. Adolescence is a frightening and complicated time – for teens and parents. Keeping the roller coaster of the teen years on track takes work and wisdom. Many parents simply don’t know where to start. With Dr. Jantz’s help they can stop worrying about the turbulence of adolescence and take action. With included resources, reflection questions, and guidance from a Christian perspective, parents learn how to become a port in the storm for their teenager, discovering the God-designed future and promise that awaits.