They told us that a useful fear alerts us to a situation we can change. If the doctor tells you that you have poor health because of your diet, and you fear disability or disease, that’s a useful fear because you can change your diet. When your health improves as a result, you eliminate your fear. But fearing that our parents will die is a hurtful fear because we can’t change the truth of the matter. We transform hurtful fears into useful fears by focusing on what we can control. We can’t stop our parents from dying, but we use the fear to remind us to spend more time with them.