Using Books to Share Positivity on World Smile Day

October 3, 2025

World Smile Day, celebrated on the first Friday of October each year, is a reminder of the power of a simple smile. Created in 1999 by Harvey Ball, the artist behind the iconic yellow smiley face, the day encourages everyone to spread positivity, kindness, and happiness through smiles and small acts of goodwill. One of the best ways to promote positivity, especially among young people, is through books that inspire joy, kindness, and optimism. For families, teachers, and anyone working with kids, books can be a fantastic tool to reinforce the message of World Smile Day. Here are some recommendations for all age groups, highlighting positivity and the importance of spreading smiles, including some in the United Through Reading library.

Preschool (Ages 2-5)

At this age, books are an excellent way to introduce simple messages of kindness, friendship, and happiness. Stories with colorful illustrations and easy-to-follow plots are perfect for preschoolers. Here are a few to consider:
Happy Hippo, Angry Duck by Sandra Boynton: This beautifully illustrated book shares the story and faces of different moods, allowing for an easy discussion on feelings with preschoolers.
Have You Filled a Bucket Today? by Carol McCloud: This classic book introduces children to the concept of “bucket filling” as a metaphor for kindness and sharing positivity. The idea that everyone has an invisible bucket, which can be filled or emptied based on their interactions with others, is an easy and effective way to teach young children about the power of their actions. Preschoolers will love the colorful illustrations and the uplifting message about spreading happiness to others.
The Feel Good Book by Todd Parr: Todd Parr’s bold illustrations and simple text explore different feelings and emotions in a way that resonates with young children. The book encourages little ones to recognize and express their feelings, while also emphasizing that it’s okay to feel a range of emotions. The book’s playful tone makes it fun, while also offering a positive message about self-awareness and acceptance.

Elementary School (Ages 6-10)

As children grow older, stories can introduce more complex themes, such as friendship, gratitude, and resilience. These books will resonate with elementary school-aged readers while continuing to promote a positive outlook.
Empathy Is Your Super Power by Cori Bussolari, PsyD: This engaging book teaches children the importance of understanding and caring for the feelings of others. Through colorful illustrations and relatable examples, the book introduces empathy as a “superpower” that everyone can develop and use to make the world a kinder place. It encourages young readers to practice listening, offering support, and recognizing that empathy can lead to stronger, more meaningful relationships.
The Good Egg by Jory John and Pete Oswald: This delightful picture book follows the story of a “good egg” who tries to be perfect all the time. Eventually, the pressure to always be good causes him to crack (literally!). Through humor and heart, the book teaches children about self-care, the importance of being kind to oneself, and the balance between helping others and taking care of oneself.
Each Kindness by Jacqueline Woodson: This book addresses the powerful ripple effect that small acts of kindness (or unkindness) can have. It tells the story of a new girl in school who is excluded by her classmates. The story serves as a reminder that even small actions matter and encourages children to consider the impact they can have on others.

Middle School (Ages 11-13)

For middle schoolers, books can explore more nuanced emotions and experiences, while still emphasizing positive messages and the importance of kindness.
Restart by Gordon Korman: This novel tells the story of a boy who loses his memory and has to “restart” his life. Previously, he had been a bully, but after his accident, he started to see the world differently and made new, more positive choices. The story highlights themes of redemption, growth, and how kindness can help reshape our lives and relationships.
Out of My Mind by Sharon M. Draper: This inspiring story is about Melody, a girl with cerebral palsy who cannot speak but has a brilliant mind. Through Melody’s perspective, the book explores themes of resilience, empathy, and the importance of not underestimating others. It encourages middle school readers to be kind and patient with people who may experience the world differently from them.
Little Women by Louisa May Alcott: This novel also emphasizes the impact of kindness from strangers and friends, primarily through the character of Mr. Laurence, the wealthy neighbor who gifts Beth a piano after seeing her love for music. His kindness strengthens the bond between the March family and the Laurence household, leading to meaningful friendships that transcend social class. The acts of generosity and kindness shared by family members, neighbors, and strangers throughout Little Women serve as powerful examples of the transformative effect that compassion and selflessness can have on people’s lives.

High School (Ages 14 and Up)

As teens enter high school, books that deal with real-life issues and complex emotions, while still fostering hope and positivity, can have a lasting impact.
The Hate U Give by Angie Thomas: Although this novel addresses complex social issues, it also conveys a powerful message about resilience, courage, and standing up for what’s right. Through the character of Starr Carter, readers learn the power of speaking out and showing compassion, even in the face of adversity. The book encourages high school readers to engage with the world around them and consider how they can be agents of positive change.
All the Bright Places by Jennifer Niven: This novel explores mental health, loss, and friendship, ultimately conveying a powerful message about the importance of human connection and finding hope even in the most challenging times. It’s an emotional read that can inspire teens to reach out to others and show kindness, especially to those who may be struggling.
The Perks of Being a Wallflower by Stephen Chbosky: This coming-of-age story explores the complexities of adolescence, including friendship, love, and mental health. Though the characters face challenges, the novel highlights the importance of supporting one another and finding positivity in life’s small, everyday moments.

World Smile Day is the perfect opportunity to spread joy and positivity through the simple act of smiling. By sharing uplifting and inspiring books with children and teens, we can encourage them to embrace kindness, empathy, and optimism. These books, suitable for various age groups, not only entertain but also help young readers understand the importance of spreading smiles and positivity to those around them.