Both of the optimism and the pessimism affects the life and forms the behavior of the individual, because the optimist expects the good and joy, and success in achieving his dreams and ambitions, as well as he sees the life with a positive view and becomes brighter and more rejoiced with the future, while the pessimist expects despair and failure and sees life with a negative view. ''The Twin'' is an interesting story revolves around a twin, one is optimistic and the other is pessimistic, where they go through many events, sometimes these events are difficult and sometimes they are funny and entertaining.