This is a great assignment from my lessons in school. Beginners and Amateurs have often shot very little with film. Because a roll of 35mm film was limited to, at most, 36 shots, good photographers had to be frugal in choosing when to shoot. Digital photographers often shoot frames indiscriminately. Give yourself an assignment and a fixed number of frames as an exercise. It will force you to think more about what images are truly worth shooting.