A change agent is someone who helps drive organizational change from inside or outside the organization. The document discusses the types of change agents, their roles and skills, and best practices. It defines a change agent as someone who influences change through their actions and influencing others. Internal change agents have knowledge of the organization but lack objectivity, while external agents provide expertise but need to familiarize themselves with the organization. Key skills for change agents include developing objectives and plans, assessing resources, managing resistance, and having a clear vision, patience, strong relationships, and leading by example.