If you spend your day fighting Slack pings, calendar reminders, browser alerts, and the constant drip of Windows toast notifications, Microsoft already shipped a surprisingly effective way to get your attention back: Focus sessions in the Clock app. The feature is easy to miss, but it can flip on Do not disturb, suppress badge and flashing alerts, and give you a clean block of uninterrupted time with just a few clicks. In practice, that makes it one of the simplest productivity tricks built...