Get It Done

Often the things rattling around in your head are not the most urgent or important things you need to do—collecting the dry cleaning, calling your cousin, making dinner—but they all consume mental space. "If you don’t handle the unimportant things, they start to suck energy out of the important things," says Allen. "It’s not just about the important things. It’s about everything."

Read the rest of the Fast Company article on David Allen.