This document discusses change management and leading organizational change. It describes Lewin's change management model of unfreezing, moving to change, and refreezing. It also discusses William Bridges' transition model of endings, a neutral zone, and new beginnings. The document emphasizes that effective change requires managing both the external change and internal transitions people experience. It provides strategies for leadership to effectively facilitate change, including communicating vision and the change plan, overcoming resistance, and fostering innovation through transformational leadership and diffusion of new ideas.