Grief: 

The Invisible String by Patrice Karst

The Invisible String Workbook by Patrice Karst

Dealing with Emotions:

A Little Spot of Emotion (8 books series) Anger, Sadness, Anxiety, Scribble, Peaceful, Love, Happiness & Confidence 

Ninja Emotions (8 book series) Angry, Inventor, Positive, Lazy, Helpful, Earth, Grumpy, Kind

The Boy with Big, Big Feelings by Britney Winn Lee

My Body Sends Me Signals: Helping kids recognize emotions and express feelings by Natalie Maguire

Inclusivity & Accepting Differences 

All Are Welcome by Alexandra Penfold

Strictly No Elephants by Lisa Mantchev

A Little Spot of Belonging by Diane Alber

Divorce:

Dinosars Divorce (A guide for changing families) by Laurene Krasny 

Two Homes by Claire Masurel

Growth Mindset:

The Day the Crayons Quit by Drew Daywalt

The Magical Yet by Angela DiTerlizzi

Self Control & Choices:

My Mouth is a Volcano by Julia Cook

The Bad Seed by Jory John

The Good Egg by Jory John (The Bad Seed Series, Book 2)

Even Superheroes Make Mistakes by Shelly Becker