“Always think about what you’re really being asked to give. Because the answer is often a piece of your life, usually in exchange for something you don’t even want. Remember, that’s what time is. It’s your life, it’s your flesh and blood, that you can never get back. In every situation ask: What is it? Why does it matter? Do I need it? Do I want it? What are the hidden costs? Will I look back from the distant future and be glad I did it? If I never knew about it at all—if the request was lost in the mail, if they hadn’t been able to pin me down to ask me—would I even notice that I missed out?”

Ryan Holiday, Stillness is the Key (Page 191)