"The Career Within You", in 2009, was co-authored with Ingrid Stabb. It has been called "the perfect career book". David Daniels, Clinical Professor, Department of Psychiatry and Behavioral Science Stanford Medical School, and author of "The Essential Enneagram" called "The Career Within You" "a groundbreaking work." He described how the book provides for nine personas "thoughtful and clear descriptions, how each style relates to the spectrum of career choices and a powerful method to determine the path that best fits you. You will discover what career best fits your style and in the process a more fulfilling life."