I also love the term "agreements". It gives it such a positive, healthy, non-threatening feel to it. Not "rules" or other such words that make it feel forced on anyone. This sounds like a choice - you agree or you don't. No harm, no foul.
Michelle, I was actually also thinking Buddhism with the concept of causing your own suffering because your thoughts and expectations aren't balanced. "When you are immune to the opinions and actions of others, you won't be the victim of needless suffering."
Although, I don't think "nothing others do is because of you" applies to something like my hubby giving me flowers because he loves me and was thinking of me...