" Whether you realize it or not, how you slept last night probably has a bigger impact on your life than what you decide to eat, how much money you make, or where you live. All of those things that add up to what you consider you—your creativity, emotions, health, and ability to quickly learn a new skill or devise a solution to a problem—can be seen as little more than by-products of what happens inside your brain while your head is on a pillow each night. It is part of a world that all of us enter and yet barely understand … Sleep isn’t a break from our lives. It’s the missing third of the puzzle of what it means to be living. "

― Edward M. Hallowell , Driven to Distraction at Work: How to Focus and Be More Productive