Don't Make Me Count to Three: a Mom's Look at Heart-Oriented Discipline
This is a book that really impacted my parenting. This book is filled with practical ways to implement discipline that isn't focused on the behavior of our children, but speaks to their hearts. Impacting our children's hearts to follow Jesus and obey Him is the goal of our parenting. This is a book which helps you to impact their hearts, which is what drives their behavior. Her companion chart gives you the bible verses that you can hang on the refrigerator to help in the moment.
Another fantastic book about reaching the heart of your child: