Marshall Goldsmith has done a great job in discussing the nature of success, professional development, and organizational dynamics of leadership development. In this classic, he describes 20 personality characteristics that become increasingly critical to overcome as one “climbs the ladder” of success in an organization beyond clear results and demonstrated skill sets in a particular subject matter or technical expertise. We all have heard about the “Peter Principle” where a common organizational dynamic is to promote people to the level of their incompetence and thus, negative impact on the organization and ultimately professional decline. This book will help you reflect on your own traits that may be in your way to better relationships and improved professional success but also help you view other professionals you work with through a systematic, researched, and easily understand model. I recommend this book for any professional but in particular any position requiring management and development of others, where relationships and interactions are keys to success, and for those interested in continuous self-improvement for a better personal and professional life.