Kids don't come with an instruction manual (just a "Child Repair Guide!"), and the parenting section in bookstores can be overwhelming. And yet, there are a handful of books that have stood the test of time. 1-2-3 Magic is one of them, having sold nearly 2 million copies over close to 30 years.

My guest today is the author of this perennially bestselling discipline guide, Dr. Thomas Phelan. Dr. Phelan has worked with children, adults and families for over 35 years. He is a member of the American Psychological Association and the Illinois Psychological Association. Dr. Phelan is the author of numerous books, DVDs and audios, the most popular being 1-2-3 Magic: 3-Step Discipline for Calm, Effective, and Happy Parenting, which is now in its 6th edition and has sold nearly 2 million copies. He maintains an active schedule of international lectures and his articles appear in many regional and national publications.

And in our conversation, Dr. Phelan outlines the 3 simple steps you can use to radically change discipline challenges in your home.