In today’s work-obsessed society, we have this belief that we have to constantly be doing something in order to be successful. But what if the opposite were true? As Stanford psychologist Emma Seppala argues in her new book, “The Happiness Track: How to Apply the Science of Happiness to Accelerate Your Success,” we can be more effective if we take time to do more of nothing. It’s a radical idea, but one that’s actually backed…