If you aren’t buying things, the money you’re bringing in is going into your savings. This opens up the opportunity for you to buy the thing that allows you to earn more money and even save time by being more efficient. You go from washing your dishes by hand, to putting them in the dishwasher to dry. You own a restaurant and now your business is more efficient by saving you time. While also allowing you to earn more money by having more clean plates readily available for customers.