the objective characters in the story are closing in on the problem
An author can pass judgment on the appropriateness of a Main Character's approach to the problem. When a Main Character's approach is deemed proper, the audience hopes for him to remain steadfast in that approach and to succeed. Regardless of whether he actually succeeds or fails, if he remains steadfast he wins a moral victory and the audience feels the story is positive. When the approach is deemed improper, the audience hopes for him to change. Whether or not the Main Character succeeds, if he changes from an improper approach to a proper one he also win a moral victory and the story feels Positive.