Brian O. Underhill, Ph.D., PCC, is the founder and CEO of CoachSource, the world’s largest executive coaching firm, with over 1,000 coaches in 51 countries. He is also the co-author of Executive Coaching for Results: The Definitive Guide to Developing Organizational Leaders. Brian previously spent 10 years managing executive coaching operations for Marshall Goldsmith. Some of his clients include Dell, Microsoft, Genentech and the State of California. He holds a Ph.D. in Organizational Psychology and is an internationally sought-after speaker. To receive your complimentary copy of the 40-page executive coaching industry study referenced in this article, please visit the CoachSource website