Every day, without realizing it, we engage in all manner of activities that diminish our willpower. Willpower is depleted when we make decisions to focus our attention, suppress our feelings and impulses, or modify our behavior in pursuit of goals. It’s like taking an ice pick and gouging a hole in our gas line. Before long we have willpower leaking everywhere and none left to do our most important work. So like any other limited but vital resource, willpower must be managed.