" There are few things ever dreamed of, smoked or injected that have as addictive an effect on our brains as technology. This is how our devices keep us captive and always coming back for more. The definitive Internet act of our times is a perfect metaphor for the promise of reward: we search. And we search. And we search some more, clicking that mouse like – well, like a rat in a cage seeking another “hit”, looking for the elusive reward that will finally feel like enough. "

― Kelly McGonigal , The Willpower Instinct: How Self-Control Works, Why It Matters, and What You Can Do to Get More of It