There are so many books for children, and adults too, that touch base on this. Here are just a few that you could read to help you choose the path of kindness.
The Kindness Book by Todd Parr
Each Kindness by Jacqueline Woodson
Zero Local: Next Stop: Kindness by Ethan Murrow
Pete the Cat's Groovy Guide to Kindness by Kim Dean
Be Kind by Pat Zietlow Miller
I Walk with Vanessa by Kerascoet
Have You Filled a Bucket Today? by Carol McCloud
Those Shoes by Maribeth Boelts
Ordinary Mary's Extraordinary Deed by Emily Pearson
Everybody's Welcome by Patricia Hegarty
The Good Neighbor by Maxwell King
Congratulations, By the Way by George Saunders
The Power of Kindness by Piero Ferrucci
Radical Kindness by Angela C. Santomero
Dare to Be Kind by Lizzie Velasquez