At the beginning of the story, Paul (and his family) mistakes luck as financial stability. He believes that if he is lucky all the family problems could go away. And he does become lucky; he is able to predict who would win the horse races his uncle gambles on. His uncle becomes dependant on Paul's luck (ability to make money) and Paul confuses his uncle's attention as love. It is not until the mother becomes involved that we see how Paul had been used.