Small Money Mistakes: How to Fix Them Before They Grow

I could watch home remodeling shows all day. They make me believe I could gut a kitchen or build a shed all by myself. (The feeling passes. My love of a good home improvement store doesn’t.) Recently, the host of one house rescue show said something so true I wrote it down: “Lots of minor things become major problems.”

There he was on a roof, worn out by one surprise after another. Previous owners and contractors had left a trail of shortcuts, and he had to fix every one before the real work could even start. No single problem was a killer. Stacked together, they were sending the whole job way over budget.

I got to thinking about where else that’s true. Turns out, just about everywhere.

Why do little mistakes pile up so fast?

Take knitting, which I do whenever I can carve out the time. Get off by a quarter of an inch at the start, then keep going. Row after row after row, that tiny error grows into a sweater big enough for King Kong.

Quilting works the same way. Ami Simms, the master quilt maker, showed what happens back in the 1990s with her Worst Quilt in the World Contest. Repeat a slightly crooked seam or a corner piece that’s a little off square, and you get a disaster. I’ll admit it’s not nice to laugh at other people’s mistakes. But these folks entered on purpose, so I’m making an exception.

Here’s how Cambridge Dictionary defines a mistake: a decision or action that leads to a result you didn’t want or didn’t intend. Notice that last part. Nobody plans a crooked seam. Nobody sets out to make a mess.

MORE: Top 10 Financial Mistakes You’ll Never Make Again And Why They Matter

The money version of a crooked seam

Personal finance has its own crooked seams. One shopping binge 18 years ago probably didn’t send you down the path to financial devastation. Neither did that horrible auto lease you jumped into before you were mature enough to know better.

But what if those two slips were followed by routine overspending, a growing credit card balance, a few refinances of your mortgage, and more car leases piled on top? Now the minor problems have become major ones.

So how does a slip turn into a slide? It stays put. A small mistake you leave alone becomes the foundation for the next one.

Say you let a small credit card balance roll over one month. The interest might be a couple of bucks. Annoying, sure. Pay the whole balance the following month and you’re back to $0. That mistake is history. Case closed.

But leave it sitting there and it invites company. One more slip, then another, and in what seems like no time at all you’re drowning in debt. (I can see you nodding.)

Fix it fast, then move on

The antidote is boring, and it works. Correct small mistakes as they happen, while they’re still small.

A performance coach named Graham Betchart has a great term for this: next-play speed. It’s how quickly you can move on from a mistake to the next thing that needs doing. A surgeon and a performance psychologist (Drs. Naples and Doorley) wrote about it for Harvard Medical School’s corporate learning site. Their point? Stewing over a missed layup leads to more missed layups. Money works like that too. The overspend on Saturday isn’t the real trouble. Shrugging it off for a month is.

They also talk about pre-loaded routines. After a double fault, tennis players step back, breathe, and reset, and they practice that routine when nothing’s on the line so it’s there when it counts. Steal the idea. Decide right now what you’ll do the moment you catch an overspend. Maybe you pull up your spending plan and see where the money slipped out, then adjust that category so it doesn’t happen again. Write it on a sticky note if you have to.

Then ask the question: What’s the next important action? It doesn’t matter whether the last play was a win or a flop. Answer it and do that thing.

MORE: The Frugal Habits That Never Go Out of Style

Whose fault is it, anyway?

Here’s where I’d pump the brakes. Some people respond to a money mistake by taking every ounce of the blame and sinking into a funk that helps exactly nobody.

The doctors suggest picturing responsibility as a pie chart. Claim your slice. Then look at the other slices (the slick salesperson, the surprise repair bill, the sale that was too good to pass up) and focus on what’s yours to control next time. An honest slice is plenty.

And go ahead and feel something about it. I know, that sounds backward.

Researchers dug into this in a study called Emotions Know Best, published in the Journal of Behavioral Decision Making. They found that when people are left to their own devices after a failure, their thinking mostly turns into justifying.

In other words, we explain it away. You know the lines. “It wasn’t a big deal.” “It’s only forty bucks.”

Here’s the twist. Those justifying thoughts don’t teach you anything, and focusing on them can keep you from improving. People who paid attention to their feelings about the failure learned from it and put more effort into the next task.

That sting you feel is useful. It’s your nudge to pause and do better.

Make your deposits before you need them

Here’s where the Contingency Fund earns its keep. You make small deposits, a little at a time, for the surprises nobody can predict, aiming for three to six months’ worth of expenses. The Freedom Account covers the ones you can see coming by setting aside a bit every month for each annual expense.

Why bring them up here? Because so many small money slips start the same way. A bill shows up, expected or not, and there’s no cash to meet it. That’s the first crooked seam.

One more habit worth borrowing is the debrief. Surgeons and military leaders do it while everything’s still fresh. Once a month, sit down with your spending plan for ten minutes and ask what went well, what didn’t, and what you’ll change. Pick one or two things to fix and decide how you’ll know they’re fixed.

Go ahead and rip out that row

Here’s my encouragement. Unravel that sweater, correct your gauge, and start over. It’s going to fit beautifully.

That quilt? Do yourself a favor. Take out that first row of wonky stitching and fix the errors before you go any farther. You’ll be winning real quilt contests before you know it.

Your money works the same way. Catch the small stuff early, fix it, and get on with the next thing.

Question: Caught a little mistake before it got big? Tell me about it in the comments. I’d love to hear it.

Want a nudge to catch the small stuff before it snowballs? That’s the kind of thing I share every single day in the Everyday Cheapskate newsletter… practical tips and real fixes for everyday life, delivered free to your inbox. Subscribe here and let’s make everyday life a little cheaper, easier and smarter.