" remember that anytime you fail to say “no” to a non-essential, you are really saying yes by default. So once you have sufficiently explored your options, the question you should be asking yourself is not: “What, of my list of competing priorities, should I say yes to?” Instead, ask the essential question: “What will I say no to?” This "

― Greg McKeown , Essentialism: The Disciplined Pursuit of Less