This is an interesting concept that I am experimenting with at the moment but have never put a name on it. Following a combination of many time management and productivity methods, I believe Scott's article on Energy vs Time makes a whole lot of sense. You are planning your days inside out, still, you usually can't finish what you've planned for the day and you blame your self-discipline for it. Or even worse, you think that you don't have enough time even though time is the only constant resource available to us (past and future doesn't exist anyways).

In the last months I had all four kinds of energy-recovering activities scheduled for each day: physical, mental, emotional and spiritual (I consider personal development to cover mainly the last two). I've been constantly reminding myself of the importance of "sharpening the saw", a Covey-principle, the 7th habit. However, I needed Scott's article to notice that Covey doesn't only mean spiritual but all four actually.

Suppose you came upon someone in the woods working to saw down a tree. They are exhausted from working for hours. You suggest they take a break to sharpen the saw. They might reply, " I didn't have time to sharpen the saw, I'm busy sawing!"

I simply used to say "take time off" but this doesn't cover the deeper meaning behind it: you need to consciously balance the four levels to get the most out of your life (and be the most productive also).

I met Scott through the blogospehere several months ago. He has a great blog with many topics in my interests, if you're somewhat like me, be sure to give it a try!