The Four Agreements

1. Be Impeccable with Your Word
2. Don't Take Anything Personally
3. Don't Make Assumptions
4. Always Do Your Best

This book by Don Miguel Ruiz is a game changer, it's one I keep on my desk and reference regularly It offers a practical code for how to live life and be in relationship with others. Just reading this list is a powerful reminder for how I want to communicate and live my life.