030 Book Talk With John Jantsch at Duct Tape Marketing. The Commitment Engine.
Summary: 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 […]