In his influential book, 'Start with Why,' Simon Sinek introduces a powerful model called The Golden Circle. He argues that truly inspiring leaders and organizations think, act, and communicate from the inside out, beginning with their fundamental purpose—their 'Why.' This is contrasted with the common approach of starting with 'What' they do. Sinek uses compelling real-world examples, from Apple to Martin Luther King Jr., to demonstrate how a clear sense of purpose fosters loyalty, innovation, and sustained success. The book provides a practical framework for individuals and businesses to discover their own 'Why' and inspire those around them.