When you have a limited theory of willpower, you're constantly on alert, constantly monitoring yourself. 'Am I tired? Am I hungry? Do I need a break? How am I feeling?' And at the first sign that something is flagging, you think, 'I need a rest or a boost.'

We want to design interventions to teach people how to harness their considerable willpower.

We're not saying people don't need fuel for strenuous work; they just don't need it constantly. People have many more resources at hand than they might think.

Carol S. Dweck Quotes