Elizabeth Olsen’s Panic Attacks Inspired a Children’s Series You’ve Never Heard About—Here’s Why

Elizabeth Olsen and her husband, musician Robbie Arnett, have openly shared their battles with anxiety—a vulnerability that has not only deepened their bond but also sparked a heartfelt creative collaboration. Drawing from their own journeys, the couple co-created the Hattie Harmony series, a set of children’s books designed to help young readers understand and manage anxiety with kindness and practical tools.

Olsen, who began experiencing panic attacks at age 22, initially mistook them for physical ailments. She found relief and grounding through practices like yoga, which she had embraced since her teenage years, and through engaging in games that provided distraction and calm. Arnett, describing himself as a “very anxious kid,” faced feelings of instability growing up amid frequent family relocations. He credits the reflective nature of the Hattie Harmony concept as something he wished had been available during his youth.

Together with author Marissa Valdez and illustrator Melissa Cho, Olsen and Arnett brought Hattie Harmony to life with two published books so far: Hattie Harmony: Worry Detective (June 2022) and Hattie Harmony: Opening Night (June 2023). The stories empower children to face their worries by encouraging journaling, taking thoughtful time-outs, and practicing self-reflection, presenting anxiety not as something to fear but as a feeling to explore and understand.

The inception of Hattie Harmony came during a simple walk the couple took, where they realized a character like Hattie—someone who helps kids navigate anxiety—would have been invaluable in their own childhoods. Their mission is clear: to provide mental health support in an accessible, compassionate way for the next generation.

As of mid-2025, no additional titles have been released, but Olsen and Arnett’s dedication to mental health advocacy shines through their work, resonating with families and educators alike. Their openness about anxiety challenges and their commitment to turning those struggles into something hopeful and educational underscore a meaningful cultural shift—one that embraces mental health with honesty and care.