There were two sets of mice in a maze:
the motivated
the lazy
When the motivated mice found cheese, they would not settle in. The motivated mice preferred chewing cheese - something that lasted a while. Every morning, they would put on their running shoes to continue to map out the maze. When their cheese ran out, they were steps ahead in the pursuit of the next cheese.
When the lazy mice found cheese, they would settle in. The lazy mice preferred soft cheese. They left their shoes tied to the coat hangar, and sat on their couch. When their cheese ran out, they were not prepared to go out into the maze, had to start over, and would say: “Who moved my cheese?!“
(This is a brief summary of an existing motivational book called: Who moved my cheese?)