BIG IDEAS Don’t spread your willpower too thin. On any given day, you have a limited supply of willpower, so decide what matters and reserve your willpower for it. Monitor your fuel gauge. Full-strength willpower requires a full tank. Never let what matters most be compromised simply because your brain was under-fueled. Eat right and regularly. Time your task. Do what matters most first each day when your willpower is strongest. Maximum strength willpower means maximum success.