Research subjects who believe in ego depletion (that willpower is a limited resource) show diminishing self-control over the course of an experiment, while people who don’t believe in ego depletion are steady throughout. What’s more, when subjects are manipulated into believing in ego depletion through subtly biased questionnaires at the outset of a study, their performance suffers as well.
Research suggests that reframing the question in this way nudges people toward delayed gratification because the different versions of the question employ entirely different cognitive processes.
Rather than relying on an effortful fight against impulses, this kind of willpower has the individual completely reimagine the problem and avoid the need to fight in the first place.