1. Destructive expenses limit your human life value, lead you into debt, or go unused. Eliminate them. 2. Lifestyle expenses allow you to enjoy life now by spending money on things you value. Manage them by paying cash for them. 3. Protective expenses protect you from risk. Address them and maximize their efficiency to get the most bang for your buck. 4. Productive expenses lead to more wealth. Increase them as long as it is still productive and you can manage the growth.