Pychyl , a professor at Carleton University in Ottawa, Canada, has been studying procrastinators for some 19 years. I talked to him about why people procrastinate and how they can learn to stop.

Tim Pychyl: When a procrastinator thinks about themselves, they'll think, "Oh, I have a time management problem," or, "I just can't make myself do it. There's a problem with my willpower." And when other people think about procrastinators, they use that pejorative term: "They're lazy."