The 7 Deadly Sins of Entrepreneurs: The Mistakes That Quietly Kill Businesses
Most businesses don't die from one dramatic disaster. They die slowly, from a handful of sins the founder commits every day without noticing. Here are the seven — and a quick quiz to find the one that's most dangerous for you.
The sins have receipts
These aren't moral scolds — each "sin" maps to a documented top reason businesses actually fail. The data shows the pattern; the article shows the cure.
Top reasons businesses fail
Leading causes cited across startup post-mortems. Source: CB Insights & failure research, 2026.
Businesses rarely die the way founders fear they will. We imagine a sudden catastrophe — the market crashes, the big client walks, the competitor crushes us overnight. But that's almost never how it happens. The truth is quieter and more unsettling: most businesses die slowly, from the inside, killed by the small daily sins of the founder who runs them. Not dramatic failures of talent or effort, but persistent patterns of behavior so ordinary they don't even register as mistakes. You commit them, they compound, and one day you look up and the thing you built is gone — and you can't point to the single moment it happened, because there wasn't one.
I know these sins intimately because I've committed every one of them. When I was building IncentOne — the first company in the U.S. to reward people for healthy behavior — I did most of what's on this list, and it nearly cost me everything. By the time I was sitting in a Starbucks in New York watching the company teeter on collapse, I could trace the wreckage back not to one bad decision but to a hundred small ones, the same handful of sins repeated until they became fatal. That's the good news hiding in the bad: because these are patterns, not single events, they're fixable. You can catch yourself. Below are the seven deadly sins of entrepreneurs, each tied to a documented reason businesses actually fail — and after them, a short quiz to reveal the one most likely to kill yours.
The seven deadly sins
Pride — Falling in love with your idea, not your customer
The deadliest sin, and the most common. You become so certain your idea is brilliant that you stop listening to the market. You dismiss the feedback that doesn't fit, explain away the slow sales, and keep building what you want instead of what people will pay for. This is why 42% of businesses fail from "no market need" — not because founders were dumb, but because pride made them deaf. Humility is the antidote: fall in love with the problem and the customer, never with your own solution.
Greed — Chasing revenue at the cost of everything else
Greed isn't wanting money; it's grabbing every dollar without thinking about the cost of getting it. Saying yes to every customer, even the wrong ones. Chasing low-margin sales that drain your cash. Growing so fast you outrun your ability to deliver. Greed fills the top line and empties the bottom, and it's a direct road to the 70% of failures that "ran out of capital." The cure is discipline: protect your margin, choose your customers, and remember that not all revenue is good revenue.
Sloth — Hiding in busywork instead of facing hard decisions
The founder's sloth doesn't look lazy — it looks incredibly busy. It's answering every email and attending every meeting to avoid the few enormous, frightening decisions that actually determine survival. It's polishing the logo while the business model is broken. Sloth is motion masquerading as progress, and it's how founders "run out of time" on the things that matter. The antidote is courage: do the one hard, important thing first, before the comfortable busywork pulls you under.
Wrath — Leading through fear and burning your people out
Under pressure, some founders turn the stress outward — snapping at the team, ruling by fear, treating people as resources instead of humans. It works for a while, then your best people leave and the ones who stay stop telling you the truth. Poor team dynamics and toxic leadership quietly hollow out companies from within. The cure is emotional discipline: your team can't perform in fear, and the moment they stop being honest with you, you're flying blind.
Envy — Copying competitors instead of defining your own game
Envy has you watching everyone else — matching their features, chasing their strategy, comparing yourself into paralysis. But copying a competitor means playing their game by their rules, which are built for them to win. Envy keeps you a second-rate version of someone else instead of a first-rate version of yourself. The antidote is to define your own playground: stop trying to be a slightly better them, and become the only you.
Gluttony — Trying to do and be everything at once
Gluttony is the founder who can't say no — to every opportunity, every feature request, every new market, every shiny idea. It feels like ambition; it's actually a lack of focus that spreads you so thin nothing gets done well. Trying to serve everyone means serving no one, and doing everything means finishing nothing. The cure is ruthless focus: pick the few things that matter, do them exceptionally, and have the discipline to starve everything else.
Isolation — Trying to carry it all completely alone
The final and most personal sin, and the one this whole company was built to fight. Founders convince themselves they must have all the answers, show no weakness, and shoulder every burden solo. So they hide the struggle, refuse help, and slowly break under a weight no one was meant to carry alone. Isolation clouds judgment and crushes resilience. The antidote is connection: the founders who survive are the ones who stop pretending and let other people in.
Which sin is killing your business?
Answer honestly — no one's watching. For each statement, tap how true it feels. At the end you'll get the one deadly sin most dangerous for you right now, and the single shift to fix it.
Why these sins are so hard to see
If these sins are so destructive, why do smart, capable founders keep committing them? Because every single one of them is a virtue that curdled. Pride is confidence taken too far — and confidence is exactly what you need to start a company at all. Greed is ambition without brakes, and ambition is what got you off the ground. Sloth's busywork is diligence pointed at the wrong target. Gluttony is enthusiasm with no discipline. Each sin is the shadow side of a strength you genuinely need, which is precisely why they're so hard to spot: the very trait that's killing you is one you've been praised for your whole life.
This is what makes self-awareness the founder's most underrated survival skill. You can't fix a sin you can't see, and you can't see the sins that look like your strengths from the inside. The founders who survive aren't the ones who are free of these tendencies — nobody is. They're the ones who've learned to catch themselves in the act: to notice when confidence has hardened into pride, when ambition has slipped into greed, when being busy has become a way of hiding. That noticing usually can't happen alone, which is the cruel twist of the seventh sin. You need other people — honest peers, mentors, a real community — precisely because they can see the sins you're blind to. The whole list, in the end, points back to isolation.
Every deadly sin is a strength that forgot its limits. The goal isn't to have no sins \u2014 it's to catch yours before they catch you.
You already have every strength you need.
Here's the reframe that changes everything: you don't need to become a different person to escape these sins. The very traits behind them — your confidence, your ambition, your drive, your enthusiasm — are the same traits that will build something great. The work isn't to crush those strengths. It's to keep them from tipping over the edge into the sins that quietly kill. Confidence without the deafness of pride. Ambition without the recklessness of greed. Drive without the hiding of sloth. Same fuel, better steering.
So take the quiz, find your most dangerous sin, and be honest with yourself about it — that honesty is already the cure beginning to work. Then do the one thing every one of these sins is secretly afraid of: let other people in. Find the peers who'll tell you the truth, the mentor who's committed these sins before you, the community that reminds you you're not the only one fighting them. Because the seventh sin — isolation — is the one that hides all the others, and the moment you stop trying to do this alone is the moment you start being able to see clearly. You already have the strengths. Now build the awareness, and the company, that lets them work for you instead of against you.
You can't see your own sins alone.
Whether you want the full survival framework alongside 250k+ founders, or a thinking partner who'll tell you the truth you can't see yourself — there's a door for where you are now.
Join the Learning Community
The full survival framework in depth — 500+ modules, tools, and a community of founders who help each other catch the sins before they turn fatal.
Face your sins →Work with Sidekick
1:1 guidance from Michael Dermer — the founder who committed all seven sins, nearly lost everything, and lived to map the way out.
Get a Sidekick →