artamuso has given a link to the correct book, and whitesco has offers some comments.
I read the book a number of years ago, long before I discovered DA or GTD... I'm not sure if it was a recommendation or I just stumbled across it in the bookstore.
It's an enjoyable and easy read. The author communicates his points in stories or parables, which I always enjoy.
As a testament to the books value, I still remember to story of the kids hiking through the woods, and the need to keep them all together and hiking at the same pace, and the different solutions.
Probably about time for a re-read for me ...