This manga tells the story of Reina, who recently started a new job at an advertising agency. Overwhelmed and stressed by the new workload and criticism from her boss, her mental health starts to suffer. One day, Reina runs into Tsuyoshi, an old college friend. Captivated by Tsuyoshi's strong self-esteem and confidence, Reina asks for his advice. To help Reina relive her mental fatigue, break out of her negative mindset, and rebuild her confidence, Tsuyoshi suggests resilience tips he adopted abroad. Following his advice, Reina addresses the roots of her habitual negativity, begins to positively control her emotions, starts to turnaround her relationships with her peers, and becomes the best version of herself. Understand the principles of positive psychology and resilience, including Bandura's self-efficacy theory, and learn how they can easily be applied in your life.