Good to Great by Jim Collins is a classic business book that explores why some companies excel while others struggle. Collins and his research team analyzed a vast amount of data to identify the key factors that differentiate great companies from their competitors. This book provides valuable insights into the importance of leadership, disciplined people, and a culture of excellence. It also delves into the concept of the Hedgehog Concept, which emphasizes focusing on what you can be the best at. Good to Great is a must-read for business leaders looking to take their companies to the next level.