In behavioral economics, decision fatigue refers to the idea that people have a limited amount of mental energy or self-control that gets depleted as they make decisions throughout the day. This can lead to a decline in the quality of their decisions, as well as increased impulsiveness and a greater likelihood of making choices that are not in their best interest. Decision fatigue can be particularly challenging for people who face complex or difficult decisions, or who have a lot of choices to make on a daily basis. To avoid decision fatigue, it is important to simplify our choices, prioritize our decisions, and take regular breaks to rest and recharge our mental energy.