This chapter discusses how corporate culture and leadership are keys to good strategy execution. It identifies the key features of corporate culture, such as core values and operating practices. Strong cultures have clearly defined values that are widely shared, while weak cultures lack cohesion. The chapter also discusses unhealthy, high-performance, and adaptive cultures. An aligned culture can aid strategy execution, while a misaligned culture can hinder it. Leaders must change problem cultures and ground culture in core values. Effective leadership is also needed to lead the strategy execution process and make timely corrective adjustments.