While you can't change the number of decisions you make for your job, you can limit daily choices at home. For instance, President Obama wears only blue or gray suits to curb unnecessary decisions. He also uses "decision" memos with three check boxes: agree, disagree, and discuss. "Too much choice is paralyzing," says Sheena Iyengar, a Columbia University business professor. "You walk into your office and a bazillion people will come at you from every side – emails, calls, meetings. Ask yourself: Are you being proactive or just reacting? If you're reacting, then half the day goes by before you say, 'Wait a minute, what am I supposed to be working on?'" Establish routines that let you focus on what you need to do first.