Start with high-confidence journaling for teens books, then narrow by subgenre or adjacent topics.
Find Your Voice: a Guided Journal for Writing Your Truth
Angie Thomas
NIV, Journal the Word Bible for Teen Girls, Leathersoft Over Board, Gold/floral, Red Letter
Zondervan
Grandmother, I Want to Hear Your Story
Jeffrey Mason
5-minute Prayer Journal for Teen Girls
Louise Holzhauer LMHC LMFT, Louise Holzhauer