This document discusses how to build and sustain a high-performance organizational culture to drive long-term employee engagement. It defines organizational culture and explains that a high-performance culture has three key components: a clear mission, shared values, and shared accountability. Such a culture provides meaning for employees, guides behaviors, inspires innovation, and provides stability during times of change. The document outlines best practices for developing a high-performance culture, including clarifying the mission and values, assessing the starting culture, communicating and modeling the values, inspiring employees, and aligning practices. Developing an authentic culture requires looking inward and involves the entire organization.