Think of willpower like the power bar on your cell phone. Every morning you start out with a full charge. As the day goes on, every time you draw on it you’re using it up. So as your green bar shrinks, so does your resolve, and when it eventually goes red, you’re done. Willpower has a limited battery life but can be recharged with some downtime. It’s a limited but renewable resource. Because you have a limited supply, each act of will creates a win-lose scenario where winning in an immediate situation through willpower makes you more likely to lose later because you have less of it. Make it
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