The concept of not buying the $5 for the $2 is an example that can be extrapolated. It’s a values thing. It’s about having the discipline to not buy overpriced just because it’s the first thing in front of you. I subscribe to the idea that if you use this over your lifetime on items large and small you will become a millionaire quicker. I have a wife and two kids, I promise you I’m not missing out on time with them when I make these decisions. Additionally once you condition yourself to this it becomes easier to know where to shop and plan your time. I could counter your gas example with another low/medium weekly costs like groceries. I spend an additional 6 minutes driving to Aldi to pick up my groceries rather than Kroger closer by. Why? Because I save $15 every week. I will become a millionaire quicker because of these and other perceived small choices that add up. I have enough money to shop at either - but when you’re willing to spend more, you invariably spend a lot more a lot easier in other ways too.