"The Advantage" by Patrick Lencioni is a book that focuses on the importance of organizational health in business. Lencioni argues that while many companies focus on various strategies and tactics to succeed, the key to long-term success lies in building a healthy organization. He explores the four disciplines that are essential for organizational health: building a cohesive leadership team, creating clarity around the organization's core values and purpose, over-communicating these values and purpose to the entire organization, and reinforcing them through human systems. Lencioni provides practical advice and real-life examples to help leaders understand and implement these disciplines, ultimately leading to a more successful and thriving organization.