Not so long ago, my after work routine looked like this: After a particularly grueling day, I’d sit on the couch and veg for hours, doing my solo version of “Netflix and chill,” which meant keeping company with a cold pint of ice cream. I knew the ice cream, and the sitting, were probably a bad idea, but I told myself this was my well-deserved “reward” for working so hard.
Psychological researchers have a name for this phenomenon: it’s called “ego depletion.” The theory is that willpower is connected to a limited reserve of mental energy, and once you run out of that energy, you’re more likely to lose self-control. This theory would seem to perfectly explain my after-work indulgences.
But new studies suggest that we’ve been thinking about willpower all wrong, and that the theory of ego