I've been in Professional Services (PSO) as a Consultant, to some of the US's largest companies, for almost 10 years, and customer facing IT roles for over 35 years in 4 countries. Shane's previous '7 Principals' book is already invaluable from my perspective in helping myself and other consultants be more effective in their role. What this book adds is the project methods to provide an environment where the consultant and the company can 'win' in this business. The information is backed up by real life experience and examples and leads the reader through all the concept areas needed to undergo a paradigm shift in the way PSO projects are initiated, managed, and delivered successfully for the Service Provider and the Client. If you are involved in professional services projects this book has the potential to become your 'bible'. It will be a permanent addition to my bookshelf and I expect to help implement a lot of the methods included here with my employer.