Your Flaws All Grow From One Bad Judgment

Picture a performance review for a strong senior engineer. At the bottom are three flaws, listed as development areas: interrupts people in design reviews, holds on to the hardest tickets instead of handing them off, and stays silent in the meeting when a peer’s plan is wrong, then sends a private message afterward.

The engineer does what most of us do with a list like that. They pick the easiest item, usually the interrupting, and work on it for a quarter. They count to three before speaking and put a sticky note on the monitor that says “let them finish.” The next review says the interrupting got a little better. It lists the other two again, and it adds a new one: defensive when questioned.

I think the list itself is the mistake. Those three items are one problem coming out in three places. Seneca put the idea in its strongest form almost two thousand years ago, and it reads like an insult the first time: a person without wisdom does not have a few vices, they have all of them. On a second read it is the most useful thing a list of flaws can hear. If your flaws share a root, the fix sits in one place.

What Seneca Meant by “All the Vices”

In Book 4 of On Benefits, Seneca is working through whether you should help people who will never thank you. Along the way he states the claim directly: all vices are in all people, but not all of them stand out in each one. We call one person greedy and another cruel because that vice is the loudest in them. The rest are still there, waiting for the situation that brings them out.

This was standard Stoic teaching, and the reason behind it matters more than the shock. For the Stoics, wisdom meant knowing what is truly good, what is bad, and what is neither, and every particular virtue was that knowledge applied to one part of life. Courage is knowing what deserves fear, and self-control is the same knowledge pointed at what deserves wanting. Because the virtues come from one source, they come as a set. Diogenes Laertius, summarizing the Stoics in his Lives of the Eminent Philosophers, reports that the virtues follow one another and whoever has one has them all. The Greek name for the doctrine is antakolouthia, the mutual entailment of the virtues, meaning each one brings the others along with it.

Vice works the same way in reverse. If every virtue grows from a true judgment about what matters, every vice grows from a false one. Chrysippus taught that the passions themselves are judgments. Anger is the belief that you were wronged and that hitting back is good. Fear is the belief that something bad and outside your control is on its way. A person who gets those judgments wrong does not get them wrong in one tidy corner of life, because the mistake travels. That same fact puts the root within reach. Epictetus built his teaching on the point that your judgments are the one thing fully up to you, so a flaw that grows from a judgment is a flaw you have the power to change.

The standard is harsh. Cicero, in On Ends, passes on the Stoic image that a person a few inches under the water can breathe no better than a person at the bottom of the sea. Close to wisdom still counts as short of it. I push back on that image below. Notice first what it refuses to let you do. It will not let you say “my only real problem is my temper,” as if the rest of you were in good shape and one wire had come loose.

Aristotle reaches a similar place from a different school. In Book 6 of the Nicomachean Ethics he argues that you cannot be fully good without phronesis, practical wisdom, and that once someone has practical wisdom, the character virtues come with it. Two schools that fought about plenty agreed on this much. Under the visible virtues sits one capacity to judge well, and that capacity is the thing to train.

I take a smaller piece of this than Seneca did. His full claim is that everyone short of wisdom has every vice, and I do not need that to be literally true to use it. The part that holds up at work is narrower: the flaws on your list usually grow from one mistaken judgment about what matters.

Why We Work Our Flaws Like a Backlog

Most of us treat our flaws like a backlog. Each one gets a ticket, the easiest goes into the next sprint, and progress means closing tickets. I understand the appeal. A list feels manageable, you can see what is done, and each item is small enough that working on it never threatens how you see yourself.

That last part is the trouble, because the list protects the root. Go back to the senior engineer and ask what each item protects.

Interrupting in design reviews protects being seen as the one who already knows the answer. Holding the hard tickets protects the same thing, since handing one off risks someone else solving it, or solving it badly in a way people pin on you. Staying quiet when a peer is wrong guards it from the other side: disagreeing out loud means you might be the one who is wrong in front of the room.

One belief explains all three: my value here depends on being seen as the person who knows. Seneca would call that a false judgment about what is good, because it puts a reputation, which other people control, in the place of the work, which you do.

Now look at what the sticky note accomplished. It closed one outlet. The belief was untouched, so it found another, and the next review listed “defensive when questioned.” The fix moved the problem around. This is why so many capable people work on their flaws for years and feel like they are bailing a boat that still has a hole in it.

How to Find the Judgment Underneath

Stop working the list and look for the sentence that explains it. Start by asking what each flaw protects, or what it treats as good. A flaw almost always does a job for you. Avoiding conflict usually protects being liked, and overcommitting usually protects being needed. When you write down the job each item does, the same answer tends to show up two or three times. Knowing why a flaw is there explains it without excusing it, and you still owe the people around you the change.

Robert Kegan and Lisa Laskow Lahey built a tool for this in Immunity to Change. Their map has four columns: the goal you keep failing at, what you do instead, the hidden commitment those behaviors serve, and the big assumption underneath that commitment. The fourth column is where Seneca would look. It holds a belief you have never tested because it never looked like a belief to you.

This is also a good job for a model. Paste your last two reviews, your 1:1 notes, and anything blunt a colleague has told you into Claude. Ask for the single belief that would explain every item, and tell it not to be kind. It has no stake in how you see yourself, so it will name the pattern faster than you will. Then argue with its answer until you either break it or admit it.

Once you have the sentence, test it against the facts. Does your value at work really depend on being seen as the one who knows? Look at the people your company trusts with its hardest problems. Most of them ask a lot of questions in public. A belief that falls apart against two real examples was never knowledge, and once you see that, it starts to lose its grip.

This is a different argument from the one in You’re Working Hard on the Wrong Things, which says to build on strengths instead of grinding on weaknesses. I still think that is right for skills, and some review items are skill gaps. Unclear design docs can mean nobody ever taught you to write one, and practice fixes that. An item is a character flaw when it does a job for you. Those flaws behave differently from missing skills, because they are one mistake showing up in several places.

How You Know It Is Working

The first sign is that items you never worked on start to move. If the root was the need to be seen as the one who knows, the hard tickets start getting handed off without any plan to do it, because letting go of them no longer costs anything you care about.

The second sign is that new situations stop producing new flaws in the old shape. A new job or a harder project is where a buried belief usually finds a fresh outlet. When the belief is weaker, the new outlet does not show up.

You will not be finished, and the Stoics said so too. In Letter 75, Seneca sorts the people making progress into grades. The highest have left most of their faults behind but are not yet safe from falling back, and the lower grades have shed the worst vices but not all of them. He counts himself among the people still on the way. That is my answer to Cicero’s drowning image. You are underwater until you are not, and the Stoics still cared a great deal about which direction you were swimming. The Stoic word for a person making that kind of progress is prokopton, and I have written about why those are the people worth studying. The test is direction: is the root weaker this quarter than it was last quarter?

What Changes When You Work the Root

Feedback stops landing as a pile of separate charges. Each new comment is more evidence about the same root, so it stings less and teaches more. You also stop defending the one flaw you had decided was your signature, because you can see it as one outlet among several. Under those changes, what you count as good starts to shift. You care more that the work goes well than that you were the one who looked right, and the behavior follows from that.

If you lead people, it changes how you write reviews. Three development areas in three boxes invite three sticky notes. Write the pattern you see across them, say what you think it protects, and ask the person whether that is true. You might be wrong about the root. The conversation about it will still do more than a quarter of counting to three.

What to Do This Week

1. Write down every flaw you have been told about. Use two years of reviews, your 1:1 notes, and the one colleague who tells you the truth. Put them all on one page.
2. Ask what each one protects. Next to every item, write the job it does for you in plain words.
3. Write the one sentence that explains them all. If you get stuck, give the page to a model and ask for the belief underneath. Expect it to sting.
4. Test that sentence against the facts. Find two people you respect who break the belief. If they exist, the belief is a judgment, and judgments can change.
5. Act against the belief once, on purpose. Pick one meeting this week where the old judgment would normally run you, and do the thing it forbids. Ask the question you are afraid makes you look slow, or hand off the ticket. Then notice what it cost you.

FAQ

What did Seneca mean when he said all vices are in all people?

In Book 4 of On Benefits, Seneca says every vice is present in every person who lacks wisdom, but not every vice stands out in each one. We call a person greedy or cruel by the vice that shows most. The Stoics believed every vice comes from the same source, a false judgment about what is good, so a person who has that error has all its outlets, even the ones that have not shown up yet.

What is the Stoic unity of the virtues?

The Stoics taught that every virtue is knowledge of what is truly good and bad in some area of life, so the virtues share one source and come as a set. Diogenes Laertius reports that whoever has one virtue has them all. The Greek name for this is antakolouthia, meaning each virtue brings the others with it. Aristotle reached a similar view, arguing that practical wisdom brings all the character virtues with it.

Should you work on one flaw at a time?

Working flaws one at a time often moves the problem instead of solving it, because several flaws usually serve the same belief. A better approach is to list every flaw you have been told about, write what each one protects, and find the one belief that explains them all. Test that belief against the facts, then act against it on purpose. Flaws you never worked on directly often start to improve.

Final Thoughts

Seneca said every vice lives in every person who lacks wisdom, and only some of them show. That reads like a verdict the first time, but the useful part is the map it hands you: if your flaws share a root, you can stop fixing them one at a time. Find the false judgment underneath your list, test it against the facts, and act against it on purpose. The items you never touched will start to move, and that is how you know you found the right root.

Working on the root instead of the list is slow, honest work, and it goes better alongside people doing the same. That is what MasteryLab is for.