There are thousands of agreements you have made with yourself, with other people, with your dream of life, with god, with society, with your parents, with your spouse, with your children. But the most important agreements are the ones you made with yourself. In these agreements, you tell yourself who you are, what you feel, what you believe, and how to behave. The result is what you call your personality. In these agreements you say this is what I am, this is what I believe. I can do certain things, and some things I cannot do.

— don Miguel Ruiz, The Four Agreements, 1997