Influence differs from power in that influence relies on persuasion rather than authority or force. As a consultant leading a change initiative, some influence tactics that could be used include rational persuasion by presenting logical arguments to gain support, inspirational appeals to motivate others through vision, and consultation to share ideas and gain buy-in. The type of tactic would depend on the individual, with rational persuasion best for logical thinkers and inspiration appeals for visionaries. Understanding a client's power structure would help strategically choose the tactics that best align with different stakeholders to gain their support.