Marco Zappacosta, founder of Thumbtack, shares two secrets to greater productivity: First, address any email with tasks or requests that can be taken care of immediately, the moment you get it. It's easy to let those email messages build up, and when you get a lot of them, they can become a source of anxiety. Secondly, begin every day thinking about the one or two most urgent things that need to get done. “The tyranny of the “urgent” can distract you from what’s most important, he says. Writing down your top “must dos” grounds the day and helps you focus on what really matters.