If you're already in a mess, you're not free to make one. - David Allen

Every thought deserves its own place in the universe. How & where do you capture yours?

But if you don’t decide what needs to be done about your secretary’s birthday, because it’s “not that important” right now, that open loop will take up energy and prevent you from having a totally effective, clear focus on what is important.

When you know how, any time, to get to the place where it's all sort of funny, you've mastered GTD.