Whether you know what you're doing or not, efficiency & style are your only improvement opportunities. - David Allen

World-class rower Craig Lambert has described how it feels in Mind Over Water (Houghton Mifflin, 1998): Rowers have a word for this frictionless state: swing. . . . Recall the pure joy of riding on a backyard swing: an easy cycle of motion, the momentum coming from the swing itself. The swing carries us; we do not force it. We pump our legs to drive our arc higher, but gravity does most of the work. We are not so much swinging as being swung. The boat swings you. The shell wants to move fast: Speed sings in its lines and nature. Our job is simply to work with the shell, to stop holding it back with our thrashing struggles to go faster. Trying too hard sabotages boat speed. Trying becomes striving and striving undoes itself. Social climbers strive to be aristocrats but their efforts prove them no such thing. Aristocrats do not strive; they have already arrived. Swing is a state of arrival. The

Here’s how I define “stuff”: anything you have allowed into your psychological or physical world that doesn’t belong where it is, but for which you haven’t yet determined what, exactly, it means to you, with the desired outcome and the next action step.

Most often, the reason something is "on your mind" is that you want it to be different than it currently is, and yet:
• you haven't clarified exactly what the intended outcomes is;
• you haven't decided what the very next physical action step is;
• and/or you haven't put reminders of the outcome and the action required in a system you trust.
That's why it's on your mind.