If you had to identify, in one word, the reason why the human race has not achieved, and never will achieve, its full potential, that word would be: … - David Allen

[A]nything that is held only in "psychic RAM" will take up either more or less attention than it actually deserves. The reason to collect everything is not that everything is equally important, it's that it's not. Incompletions, uncollected, take on a dull sameness in the sense of the pressure they create and the attention they tie up.

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

A task left undone remains undone in two places — at the actual location of the task, and inside your head. Incomplete tasks in your head consume the energy of your attention as they gnaw at your conscience. — Brahma Kumaris