This is probably the best book written on discipleship. Willard does one of the best exegetical works on the Sermon on the Mount in this book. He also has a specific chapter (the majority of the book is on what it means to be a true disciple) on discipleship that is just unbelievable. I don't normally recommend books but this book is too good not to read. One of the classics of the day that someone who is truly seeking to understand what it really means to follow Jesus MUST read. He could have ended the book on the discipleship chapter. I pray and hope everyone who checks this book out would be changed as I was.