Tripp, Paul David. Age of Opportunity: A Biblical Guide to Parenting Teens, 2d ed. Phillipsburg, NJ: P&R Publishing, 2001.
While this book will be very helpful for parents of teenagers, it can be life-changing for anyone of any age. It is often true that when we see how our faith makes a very practical difference in a situation others face that it helps us to apply the same to our own. This may also allow you to gain insight into the lives of your children, grandchildren, neighbors and others so that you will be able to share your faith with them.