This book provides a step-by-step guide to the science of organizational diagnosis. Leaders at all levels of organizations are often perplexed and mistaken about what is actually happening underneath the surface in their teams and organizations. Like a medical practitioner, it is often critical to first understand the underlying dynamics before making a diagnosis and developing a treatment plan.The purpose of this book is to provide leaders, consultants, and facilitators in positions of having to design interventions, with practical and straightforward approaches to diagnosing their situations. The book is filled with practical strategies, tools and videos to guide leaders on their journey to success.Over the last 30 years Steve Zuieback and Tim Dalmau have worked in 41 countries in publicly listed and private corporations, government organizations and non-profits, spanning resources and mining, engineering, transport, health care and education sectors. This book is the synthesis of their experience and their approaches that have guided companies, teams and leaders in their pursuit of excellence.