Boy, they weren't kidding when they said the answers are in you. I'm learning so much philosophically from studying the mechanics of my own body, it isn't even funny; and it isn't funny how angry it's making me that there aren't classes in this in the academic world, either.
Here's something I learned from trying to perfect a Qi-driven punch. (By the way, I capitalize Qi the way I'd imagine we'd capitalize Ocean if there was only one; and I italicize it to note that it's a transliteration of a foreign term and should be pronounced "chi".)
Intentional living is a lot, lot more about letting go at the right time than it is about reaching for anything. Reaching, wanting, desiring things is pushing your energy out into a void, because the thing you're aiming for isn't there yet. It's also, by necessity, neglecting to put that energy into doing the best you can with what you're already holding.
Everything you hold, you will need to let go of. Other things will be placed in front of you and you'll need to let go of some things in order to take new things; sometimes you'll also need to let go because it's just time for those things to enter non-existence (or time for you to). Fearing or obsessing about what that's going to be like is both pointless (you simply can't know what it'll be like) and, again, wasting energy that you could be using to do the best job holding them that you can.
So you throw* a perfect punch* by using your energy correctly: You focus on what you're holding; you be ready to let it go when it's time — not too soon, and not too late. If you're ignoring it to reach for other things, or to fear letting it go when the time comes, you're letting go too soon. By releasing (any energy: physical, emotional, etc) at just the right time, you gain incredible power.
In other terminology, perfect yang is surrounded by perfect yin. Since we move in time, and the yang is a split instant whereas the yin is all the time that leads up to and follows it, the yin is much more accessible to our control.
In other, other terminology, you can make a perfect action by getting all the stillness on either side of it just right.
*insert any verb & noun here