Lots and lots of people spend lots and lots of time creating missions, values, and purposes. To be sure, these things are important – to align and prioritize teams, projects, and organizations.
BUT! One of the most powerful ways of differentiating and prioritizing is listing the what Not-To-Do. Peter Drucker calls the inverse of priorities, ‘posteriorities’. If your tongue, like mine, gets tangled up saying that, just call it the ‘not to do’ list. Peter Drucker also called it ‘planned abandonment’. Read more about this from the source on the Drucker Exchange here.