A closer look
Running out of mental energy at the end of a long workday is mostly just a dramatic self-fulfilling prophecy. For years, psychology taught "ego depletion"—the idea that willpower is a limited battery that drains with use. But researcher Veronika Job flipped this on its head, proving that willpower only depletes if you fundamentally believe it is a limited resource. People with "non-limited" implicit theories of willpower don't experience a massive drop in self-control after difficult tasks. Your brain only cuts off your motivation because you have culturally internalized the entirely fictional idea that you are supposed to be exhausted.
