What’s the first thing you do when you wake up in the morning, before you even brush your teeth? Is it checking the e-mail that’s flooded into your inbox overnight? Does the pull feel increasingly irresistible, even Pavlovian? Do you get so immersed in responding to other people’s agendas that 30 minutes can go by before you even look up?Here’s a radical proposal: Don’t check your e-mail at all tomorrow morning. Turn it off entirely. Instead, devote a designated period of uninterrupted time to a task that really matters.