Raising a sense of purpose -- service to a "greater" -- in someone who's sensitive to it, involves *offering* purposes and then *connecting* to them.
They are also rare, short-lived, unforced, and I know this will sting, remembered chiefly on the unusual occasions where they win, not the common ones where they lose.
But K, sitting right next to me freaking out about failing her English composition class, well, hell, she was right there, right in front of me. I could effortlessly connect my action to my purpose.
The "greater" is fine. The motivate-ee is fine. But if we don't connect them? No go.
Every purpose that's right in front of me is one I can use to energize my work. Every purpose that's disconnected from me is just so much blah-blah-blah motivational poster.
Helping him with his homework serves a whole lot of very different "greater"s for me. I hope you get to work on a bunch of different purposes today, too, ones as important to you as this kid is to me.