I first tried meditation in my office about three years ago, when a group of colleagues met in a conference room for a quick guided session. I remember that first simple meditation so well: After about 10 minutes of sitting with my eyes closed, in a circle of plastic chairs, I felt like I’d been in a spa for hours. My mind was quiet and my body moved slowly. I walked back to my desk bleary-eyed and relaxed, like I had just consumed a glass of wine.