The document discusses Kurt Lewin's three-stage model of change known as the unfreezing-change-refreezing model. It explains each stage: unfreezing involves making people open to change, change is the process of adopting new behaviors or thoughts, and refreezing establishes the new habit. It also discusses the importance of effective communication between healthcare professionals and patients, and some barriers like language differences. Strategies to minimize disruptions include using a translator, speaking clearly, and checking for understanding.