This work was a book design for Who moved my cheese? It is a motivational business fable by Spencer Johnson, which describes change in one's work and life. The author used four characters, two mice and two "little people", who have four typical reactions to those changes during their journey for hunting cheese, and these four reactions has covered all different kinds people in real life. With simple characters and story, this book told the truth of life. Therefore, in terms of design, it was also kept in a simple and direct tone.