Intentional Upgrades vs. Lifestyle Creep: How to Spend More on What You Love Without Going Broke

The Cautionary Tale of a Fancy Red Bathrobe (and Why Your Raise Vanished)

In 1769, the French Enlightenment philosopher Denis Diderot was having a banner year. He was fifty-six years old, famous across Europe for co-creating the Encyclopédie, and—like almost all writers throughout history—completely broke. When Catherine the Great of Russia heard that Diderot couldn’t afford a dowry for his daughter, she stepped in with the ultimate patron move: she bought his personal library for a small fortune, appointed him as its paid librarian, and told him to keep the books in his own house.

Suddenly flush with cash, Diderot treated himself—or was gifted by a well-meaning friend—a gorgeous, plush scarlet dressing gown. He retired his old, raggedy, ink-stained robe and slipped into luxury. And that is the exact moment his life fell apart.

Looking around his study while wearing this magnificent scarlet robe, Diderot noticed a problem. Next to the robe, his old straw chair looked pathetic. So he replaced it with an armchair covered in Moroccan leather. But once the leather chair arrived, his plain wooden desk looked like drift-wood salvaged from a tavern, so he bought an expensive new writing table. Soon, the prints on his walls, his modest rug, and his bookshelves all looked intolerably shabby next to the new furniture. Within months, he had gutted and replaced his entire study.

Sinking into his expensive new chair, staring at bills he hadn’t planned to pay, he wrote a bitterly funny essay titled Regrets on Parting with My Old Dressing Gown. In it, he delivered a line that belongs tattooed on the inside of every modern credit card wallet: “I was the absolute master of my old robe. I have become the slave of the new one.”

Over two centuries later, the anthropologist Grant McCracken gave this domino reaction a formal name: the Diderot Effect. It works on two simple, ruthless psychological gears. First, human beings crave identity symmetry—we want our stuff to match the story we tell ourselves about who we are. Second, a single new possession acts as an aesthetic trojan horse. Once it crosses your doorstep, it quietly declares war on everything you already own.

We see this play out every single day in modern adulthood. You don’t wake up one morning and say, “I’d love to increase my annual living expenses by $24,000 for no measurable increase in happiness.” Instead, you get a $15,000 raise and decide you’ve earned a slightly nicer apartment in a trendier neighborhood. That feels completely reasonable! Except the new building has a garage that charges $250 a month for parking. And the people in the lobby carry $8 oat-milk cortados from the artisanal roaster downstairs instead of drinking drip coffee from a bruised thermos. And your old IKEA sofa looks like a college dorm relic against those floor-to-ceiling windows, so you finance a $3,500 sectional. Before the ink on your promotion letter is dry, you are somehow broker at $115,000 a year than you were at $75,000.

The Hidden Mechanism: Why Intentional Lifestyle Upgrades vs Lifestyle Creep Actually Works

Here is where standard money blogs usually pull out a wooden ruler to whack your knuckles. They tell you that any increase in spending is the devil, and that you should pretend your raise never happened. But if you actually look at hard economic data—and talk to real people who have spent a decade grinding through their careers—a much more interesting picture emerges.

First, let’s clear your conscience: the idea that the average person blows 100% of every raise on shiny toys is largely an internet fairy tale. When financial researcher Nick Maggiulli analyzed longitudinal household data from the Panel Study of Income Dynamics (PSID) tracking non-retired Americans across ten-year stretches, he found that lifestyle creep is mostly a myth for the vast majority of earners. Only a small fraction of households exhibited what he called “Serious Lifestyle Creep” (where spending growth eats up more than 75% of an income jump). Most normal people naturally save a healthy chunk of their pay increases while spending some of the rest to make their lives less miserable.

In fact, for diligent savers, the real danger is often the exact opposite of reckless splurging: a psychological trap known in financial independence circles as a “scarcity hangover.” When you spend your twenties scraping by, counting every grocery store coupon, and living in fear of an unexpected car repair, your brain gets wired for survival mode. Then your career takes off. You start making real money, automating your investments, and slogging through the “boring middle” of index investing. Yet you still feel a spike of physical panic when a friend suggests splitting appetizers at dinner, or you stubbornly sleep on a sagging ten-year-old mattress that gives you lower back pain because spending $1,400 on a bed feels “irresponsible.”

As Morgan Housel points out in The Psychology of Money, using money to gain control over your time and daily peace of mind is the highest dividend wealth can ever pay. Hoarding every cent out of chronic frugality guilt doesn’t make you disciplined; it just makes you the richest person in the chiropractor’s waiting room.

So how do we separate healthy quality-of-life improvements from the scarlet-robe spiral? When we examine intentional lifestyle upgrades vs lifestyle creep under a microscope, the difference comes down to two scientific and structural factors: what you are buying (time vs. status) and how the cost behaves (variable vs. permanent overhead).

In a landmark 2017 study published in the Proceedings of the National Academy of Sciences (PNAS), researchers Ashley Whillans, Elizabeth Dunn, and Michael Norton surveyed over 6,000 adults across four countries and ran a clever field experiment. They gave working adults $40 on two consecutive weekends. On one weekend, participants were instructed to spend the $40 on a material purchase for themselves—a nice shirt, fancy wine, a new gadget. On the other weekend, they had to spend the $40 on anything that saved them time, like paying for housecleaning, grocery delivery, or outsourcing a dreaded chore. The results were unmistakable: buying time significantly reduced feelings of “time famine” and boosted life satisfaction, whereas buying material stuff barely moved the needle after the initial rush wore off.

Material upgrades suffer from furious hedonic adaptation. The first week you drive a luxury SUV with heated massage seats, you feel like royalty. By month four, it is just the metal box you sit in while swearing at traffic on the interstate—except now it comes with a $780 monthly payment and demands premium gas. Time, health, and friction-removal upgrades work differently. Every single Saturday morning you spend drinking coffee in the backyard with your dog instead of scrubbing baseboards because you hired a bi-weekly cleaning service delivers a fresh dose of relief.

Key Shifts in Perspective: Intentional Lifestyle Upgrades vs Lifestyle Creep

• Friction Removal vs. Baseline Inflation: An intentional upgrade removes a specific, recurring annoyance from your week (a chaotic commute, a freezing bedroom, a hated chore). Lifestyle creep blindly inflates the price tag of things that were already working just fine because you feel like someone in your tax bracket “should” have the fancier version.
• Variable Joy vs. Fixed-Cost Handcuffs: As high earners frequently point out in candid discussions about enjoying your money without ruining your future, the deadliest form of creep isn’t buying a $200 steak dinner or flying business class once a year. Those are variable expenses—if you lose your job or want to take a sabbatical next month, you can cut them to zero in thirty seconds. Real danger lives in fixed-cost overhead creep: doubling your mortgage, signing a three-year luxury lease, or taking on recurring commitments that permanently raise the minimum amount of cash you need just to survive thirty days.
• Isolated Purchases vs. Cascading Ecosystems: A great intentional upgrade is a closed loop. Buying an ergonomic office chair ends at the chair. Lifestyle creep buys an ecosystem that demands constant feeding—like buying a boat, a vacation condo, or a high-maintenance luxury car whose oil changes cost as much as a weekend getaway.
• Internal Utility vs. External Scorekeeping: If nobody on earth could ever see the purchase—if you weren’t allowed to post it, mention it at dinner parties, or have guests notice it—would you still want it just as badly? If the answer is an immediate yes (like a quiet dishwasher, high-thread-count sheets, or bloodwork panels not covered by insurance), it’s almost certainly an intentional upgrade.

How to Actually Use This in Real Life

Knowing the theory is great, but when a bonus hits your bank account or you finally land a higher-paying role, willpower is a terrible defense mechanism. You don’t need a color-coded spreadsheet tracking every pack of gum you buy; you need a simple set of rules that lets you spend generously on what matters while keeping your wealth engine humming in the background.

1. Apply the “50% Raise Rule” Before the Money Hits Checking

2. Run the “Diderot Ecosystem Audit” on Every Upgrade

3. Prioritize the “Daily Touchpoint & Time-Famine” Matrix

4. Keep Your “Emergency Brake” Light

Where Most People Get This Wrong

Even smart, financially literate people trip over two subtle traps when trying to balance enjoying today with building wealth for tomorrow.

The first mistake is confusing “buying time” with “numbing exhaustion.” Have you ever worked a brutal 55-hour week, felt completely fried on Friday night, and spent $95 on DoorDash for lukewarm Thai food that arrived forty-five minutes late in soggy plastic containers? We tell ourselves we are “buying back our time,” just like that Harvard/PNAS study said to do! But there is a massive difference between a proactive, planned upgrade that gives you energizing free time (like having pre-prepped healthy meals or groceries delivered on Sunday so you can hike with friends) and panic-spending money at 8:00 PM because your job is draining your soul. Reactive convenience spending rarely makes you happier; it usually just acts as an expensive bandage on a schedule that needs fixing.

The second mistake is the “Upgrade Everything by 15%” Trap. When people get a raise, their default instinct is to spread it like a thin layer of butter across their entire life. They get a slightly nicer apartment, buy slightly pricier shirts, order slightly more expensive wine at slightly trendier restaurants, and subscribe to three more streaming services. Because a 15% bump in any category is barely noticeable after two weeks, they end up spending thousands of extra dollars a year while feeling like their life hasn’t changed at all.

Instead of upgrading everything by 15%, try leaving 90% of your life pleasantly modest and upgrading the 10% you deeply care about by 300%. Drive the boring ten-year-old Honda Civic with zero shame, keep your housing costs well below what the bank says you can “afford,” and protect your digital and financial security with the same care you’d put into choosing your 2026 vault for long-term assets—and then spend wildly, unapologetically on the one or two crafts, hobbies, or time-savers that make you wake up excited on a Tuesday morning. Nobody remembers the fifty mediocre takeout meals they bought because they weren’t paying attention, but you will remember every single morning you woke up pain-free, made a phenomenal cup of coffee in a quiet kitchen, and knew your bills were covered ten times over.

📚 Sources & Further Reading Mentioned in This Essay

• The Psychology of Money — Morgan Housel’s essential breakdown of why financial success has less to do with how smart you are and everything to do with how you behave, including why control over your time is the ultimate dividend of wealth.