Imagine how much better workers could do their jobs if they knew exactly how they spend their day. Thanks to a new wave of technologies called auto-analytics, they can do just that. These devices—from computer software and smartphone apps to gadgets that you wear—let users gather data about what they do at work, analyze that information and use it to do their job better. They give workers a fascinating window into the unseen, unconscious little things that can make such a big difference in their daily work lives. And by encouraging workers to start tracking their own activities—something many already are doing on their own—companies can end up with big improvements in job performance, satisfaction and possibly even well-being.