Super short (approx. 40 pages) and concise, it's a book you can read in one sitting.
Boundaries are important to protect ourselves from people that seek to take advantage of us. From realizing our own needs and rights, what is boundaries, how to create and defend our boundaries, and how to spot if someone is trying to walk all over us, this book is a great read.
(Right click or long tap the link and open in new tab so you don't have to log into your google account)
https://drive.google.com/file/d/1EGDg7cGSwr1DSp0dSxQQympi562Rj-Ec/view?usp=drivesdk