How Habits Work (and How They Change)

"Most of the choices we make each day may feel like the products of well-considered decision making, but they're not. They're habits. [...] Countless people, from Aristotle to Oprah, have tried to understand why habits exist. But only in the past two decades have neurologists, psychologists, sociologists, and marketers really begun understanding how habits work—and more important, how they change."