“Everything we say yes to means saying no to something else. No one can be two places at once. No one can give all their focus to more than one thing. But the power of this reality can also work for you: Every no can also be a yes, a yes to what really matters. To rebuff one opportunity means to cultivate another. This is the key not just to professional success but also personal happiness. When someone takes ‘just a few minutes of your time,’ they aren’t just robbing you. They’re robbing your family. They’re robbing the people who you serve. They are robbing the future. The same goes for when you agree to do unimportant things, or when you commit to too much at one time. Except this time, you are the thief.”

Ryan Holiday, Discipline Is Destiny (Page 118)