"Sparingly" was not the best term for the link, but the intention was to communicate the idea that self-control is not infinitely supplied. Like any finite supp

"Sparingly" was not the best term for the link, but the intention was to communicate the idea that self-control is not infinitely supplied. Like any finite supply, it can be depleted; therefore, use it on things that that you find it to provide the best return on investment. (Whether or not self-control can be cultivated is not really address in the article.)