This chapter titled "The Engagement Growth Engine," introduces a human-centric approach to organizational success, arguing that happy customers directly foster a happy culture, rather than the reverse. It highlights the authors' frustration with companies becoming too internally focused, emphasizing that customer satisfaction drives employee pride and motivation. It proposes a three-part system for cultural transformation: a framework of human engagement pillars, eight behavioural disciplines, and the Market Responsiveness Index (MRI) as a measurement tool. Ultimately, the source asserts that sustained growth and profitability are directly linked to strong leadership, employee, and customer engagement, especially in an era of technological disruption and declining trust.