I bought Dr. Dyer's book but I could have saved myself about $20 by just watching his PBS special last weekend on the same topic. I got more from watching his PBS special than reading the book.
Dyer examines the teachings from Tao Te Ching, written by Lao-Tzu before the age of Confucius. Tao Te Ching is described by many as the wisest book ever written. Dyer attempts to update its ancient wisdom for our use today.
I find Dyer a compelling speaker. His PBS specials are usually worth listening to. However Dyer, the author, wrote a book that was too long (389 pages) and too abstract for me. I also did not relate to many of his "Do the Tao Now" exercises.