Start with high-confidence mindfulness for kids books, then narrow by subgenre or adjacent topics.
I Am!: Affirmations for Resilience
Bela Barbosa
When Harley Has Anxiety
Regine Galanti, PhD
A Kids Book About Mindfulness
Caverly Morgan
Calm Thoughts for Kids
Max Lucado
Calm-down Time / Momento Para Calmarse
Elizabeth Verdick
Stress Can Really Get on Your Nerves
Trevor Romain, Elizabeth Verdick
Your Happiest You
Judy Woodburn
Cranky Right Now
Julie Berry
Each Breath a Smile
Sister Susan
A Pebble for Your Pocket
Thich Nhat Hanh
Breathe Deep
Joanie Leeds
