This engineer contributed to the early stages of Google’s mobile search engine. However, he built his name in the company through his mindfulness classes for his colleagues. His recipe for happiness is remarkably simple: Pay attention to the small things in life. He recommends recognizing “thin slices of joy.” “Right now, I’m a little thirsty, so I will drink a bit of water. And when I do that, I experience a “thin slice of joy” both in space and time,” he says. “It’s not like ‘Yay!”” he notes in his new book Joy on Demand. “It’s like, ‘Oh, it’s kind of nice.’”