I literally recommend this book to everyone I know that has more than one child or who is thinking about having another-to those who even babysit siblings and to those who have siblings themselves! There are too many things we can say, do or not do to that affect our children's relationships with each other and ourselves positive and negative. This book helps reveal the long term effects with practical advice that can be used everyday. And this book is so easy to read with actual visual scenarios that help put into practice this mind blowing need to know information. I am a Christian and this book is relevant not just in my home but in every home. It actually has helped to heal relationship dysfunctions between my sisters and I as well. It is a parenting MUST read!