I found this note I jotted down:

Next time you ask for a favor, you should see if you can reciprocate the favor before you even ask.

Seems like something I would write down.

I probably felt stronger about it at the time than I do now. I’m thinking now when you’re in a position of needing a favor, you might not be in the best position to be doling out favors yourself. Still, if the favor is some business thing and not like hey buddy bail me out of jail, seems like a strong move and far more likely you’ll get what you’re asking for.

Seems a bit spiritually similar to how Stephen Dubner signs off Freakonomics episodes:

Take care of yourself, and if you can, someone else, too.