The "Who Moved My Cheese" pdf is a free download of the book of the same name, a business parable written by Dr. Spencer Johnson. The book became an international bestseller about managing change in the business world. The pdf became available after Dr. Spencer's founding company reorganized in 2005.
The story of "Who Moved My Cheese" is told through the parable of mice in a maze reacting in different ways to their cheese being moved as they search for it. The parable outlines the most common ways of dealing with change. The book is credited with helping both businesses and people cope with change in a more healthy way.