In "I'm Too Nice," the narrator struggles with their overly kind nature, often putting others' needs before their own. This results in situations where they're taken advantage of, leading to frustration and exhaustion. Friends and family appreciate their kindness but sometimes fail to understand the toll it takes on the narrator. Throughout the story, they begin to learn the importance of setting boundaries and balancing kindness with self-care, ultimately realizing that being nice doesn't mean sacrificing their own well-being.