The Commitment Engine, the new book from John Jantsch at Duct Tape Marketing. On this episode of Think Big Radio our neighbor from down the street John Janstch stops by to talk about his new book The Commitment Engine. Host Derek Olsen and Mr. Janstch discuss why he felt the need to write on the subject of commitment. What is commitment and why is it so important to be committed to doing great work? Derek and John dig in to some of the key concepts in The Commitment Engine and John goes even deeper discussing how those concepts have a huge impact on a small business owner.