Time Management, Simplified: How to Be Productive With No Worries This guest post was written by Leo Babauta of the Zen Habits blog. I’m a big fan of Getting Things Done (GTD) by David Allen, and adopted the system wholeheartedly a year and a half ago. This year, I’ve written a number of posts on GTD, but one of my habits is to take whatever I do and try to simplify it. Slowly, I’ve been reducing