He describes how you need to work ON your business (developing franchiseable systems) rather than IN your business (as a worker).
This book extends that theme for contractors. There is alot of new material here that updates previous versions. I was able to read it quickly in an afternoon... even after extensive underlinings. I went to his web site and researched other books here on Amazon.
Overall, this should be recommended reading for any entrepreneur, particularly those that have been in business for several years and are frustrated.