In the excerpt, Murakami discusses how he copes with unjust criticism and feelings of disappointment by running longer distances. This physical exertion helps him to channel his emotions, allowing him to confront his weaknesses and limitations. He finds that pushing himself in this way not only exhausts his discontent but also serves as a reminder of his own vulnerabilities.

Through this process, Murakami transforms feelings of anger and frustration into self-improvement. Rather than succumbing to negative emotions, he uses them as motivation to grow stronger both physically and mentally. His reflections illustrate a profound connection between physical endurance and personal development, showing how challenges can lead to resilience and strength.