What did Jesus really mean when he said, "Follow me"?

In this new audiobook, David Platt, author of the New York Times best-selling book Radical: Taking Back Your Faith from the American Dream, contends that multitudes of people around the world culturally think they are Christians yet biblically are not followers of Christ.

Scores of men, women, and children have been told that becoming a follower of Jesus simply involves believing certain truths or saying certain words. As a result churches today are filled with people who believe they are Christians—but aren't. We want to be disciples as long as doing so does not intrude on our lifestyles, our preferences, our comforts, and even our religion.