The document analyzes the ego and self-conflict of the main character in the short story "The Diamond Necklace". It identifies that the main character, Mrs. Mathilde Loisel, displays a strong ego by refusing to go to a party because she does not have a nice enough dress and feels poor compared to others. This causes her to borrow a neighbor's diamond necklace but she loses it, plunging her into debt and self-conflict for years as she works to replace it. The document used psychoanalytic techniques developed by Sigmund Freud to analyze the character's ego and how it affected her actions and mental state.