"Who Moved My Cheese?" by Spencer Johnson is a parable that explores the inevitability of change and the importance of adapting to it in both personal and professional life. The story follows four characters who live in a maze and rely on cheese for sustenance and happiness. When their cheese supply unexpectedly runs out, two of the characters embrace change and venture into the maze to find new cheese, while the other two resist change and suffer the consequences. Through this simple yet profound tale, Johnson imparts valuable lessons about the necessity of flexibility, resilience, and proactive mindset in navigating life's transitions and achieving success.