I suggest that you use your mind to think about things, rather than to think of them. You want to be adding value... not simply reminding yourself th… - David Allen

I would not give a fig for the simplicity on this side of complexity, but I would give my life for the simplicity on the other side of complexity. — Oliver Wendell Holmes

A commitment kept only in your head will be given too much or too little attention.

The big problem is that your mind keeps
reminding you of things when you can't do
anything about them. It has no sense of past or future. That means that as soon as you tell yourself that you need to do something, and store it in your RAM, there's a part of you that thinks you should be doing that something all the time.