Somewhere in a climate-controlled building a few miles from your home, there might be a 10×10 unit holding a couch you don’t remember buying, boxes you haven’t opened since your last move, and a monthly charge of around $180 that hits your card without a second thought. Multiply that by twelve months and you’re looking at over $2,000 a year — money quietly leaving your account for a service that, if you’re honest, stopped delivering value a long time ago.
Warren Buffett has a net worth of over $150 billion and still lives in the same five-bedroom house he bought in Omaha in 1958. That contrast — vast wealth, modest daily life — is the part of his story that gets repeated the most. But it’s not really the interesting part. The interesting part is what he does spend on, and why. Buffett isn’t frugal for its own sake. He’s selective. And that selectiveness, more than the net worth, is something an ordinary household budget can actually learn from.
You probably know roughly what you earn. Do you know what you actually spend? Most people don’t — not because they’re careless, but because modern spending is designed to be invisible. A card tap, an autopay, a subscription that renews itself quietly every month: none of it demands your attention the way handing over cash once did. That’s exactly why a simple, one-month tracking habit can feel almost startling the first time you try it. Not because you’re bad with money, but because nobody’s finances are visible by default anymore.
Retirement can feel like a fog — a vague sense that you should be “saving more,” with no clear sense of how much is actually enough. The Rule of 25 cuts through that fog with one multiplication: take what you spend in a year and multiply it by 25. Suddenly retirement stops being a mood and becomes a number you can write on a sticky note. But the most useful part of this rule isn’t the number itself — it’s what it reveals about your spending, and how much power you already have to change your own target.
