Who Moved My Cheese? by Dr. Spencer Johnson is a bestselling motivational fable about dealing with change in life and work. The story follows four characters—two mice, Sniff and Scurry, and two littlepeople, Hem and Haw—living in a maze and searching for cheese, which symbolizes happiness, success, and security. When their cheese supply suddenly disappears, the mice quickly adapt and set off to find new cheese, while Hem resists change and Haw eventually learns to embrace it. Through this simple yet profound parable, the book teaches readers to anticipate change, overcome fear, and move forward with courage and flexibility.