Start with high-confidence depression & mental health books, then narrow by subgenre or adjacent topics.
Waiting for Normal
Leslie Connor
Fifty-four Things Wrong With Gwendolyn Rogers
Caela Carter
Kyra, Just for Today
Sara Zarr
Rain Rising
Courtne Comrie
Quagmire Tiarello Couldn't Be Better
Mylisa Larsen
Hush
Jacqueline Woodson
Puzzled
Pan Cooke
A Kids Book About OCD
Hazel Hall, McKenzie Young-Roy
Small As an Elephant
Jennifer Richard Jacobson
Violets Are Blue
Barbara Dee
Louder Than Hunger
John Schu
Shark Teeth
Sherri Winston
What to Do When You Worry Too Much
Dawn Huebner
Someone Else's Shoes
Ellen Wittlinger
Name and Tame Your Anxiety
Summer Batte
The Poetry of Car Mechanics
Heidi E. Y. Stemple
Game Face
Shari Green
Crushing OCD Workbook for Kids
Natasha Daniels
M Is for Autism
The Students of Limpsfield Grange School, Vicky Martin
Fighting Words
Kimberly Brubaker Bradley