The email arrives: you've got the job, the promotion, the place on the project. For ten seconds you feel brilliant. Then something shifts. You start to wonder whether they made a mistake, whether the interview questions were unusually easy, whether anyone will realise you've been blagging it all along.

That gap between what you've achieved and what you believe you deserve is what most people mean by imposter syndrome. It's the nagging sense that your success is down to luck, timing or other people being polite, and that the truth is about to be exposed.

It's common, it's uncomfortable, and it isn't a character flaw. Understanding where it comes from makes it far easier to work with.

What it actually feels like

It isn't the same as feeling nervous before a big presentation. Nerves pass once you start. This is a pattern that keeps returning, often in the moments that should feel best.

• Attributing wins to luck, timing or "being in the right place".
• Discounting praise as politeness rather than evidence.
• Over-preparing until you're exhausted, then still feeling unprepared.
• Staying quiet in meetings because your question might reveal a gap.
• Assuming everyone else is confident, capable and doing it properly.

It isn't the same as being out of your depth

A genuine skill gap is closed by learning. Imposter feelings keep coming back even when the evidence says you're performing well. The tell is the persistence: you get the results, the good feedback, the repeat invitations, and the doubt ignores all of it.

Why it happens

You can only see your own messy interior. You know about the drafts, the second-guessing, the part you guessed at. Everyone else sees the finished version. Comparing your process with someone else's output is a losing game, and it's the one most of us play.

Environment matters too. Some workplaces reward visible confidence more than quiet competence. If you're the youngest in the room, the first from your background, the only person who didn't follow the traditional route, or the one returning after a career break, you attract more attention — and not always the friendly kind. Extra visibility makes self-doubt louder.

New territory triggers it. A first management role, a promotion, a change of industry, going freelance, coming back after leave. Being good at one thing doesn't automatically make you feel legitimate in the next, and competence rarely transfers cleanly.

Early messages linger. If praise at home was tied to results, or you were labelled "the clever one", you may have learned that your worth depends on being impressive. Every task then becomes an audition rather than a piece of work.

Personality plays its part. Perfectionism, high personal standards and a habit of measuring yourself against others all feed the feeling. So does working in a culture where nobody ever says "I don't know" out loud.

The quiet cost

Self-doubt is expensive. It shows up as overwork, because you try to close the imagined gap with hours. It shows up as hoarding tasks, because delegating feels like a risk. It shows up as silence in meetings, as not applying for the role, as not asking for the pay rise, as not challenging a decision you know is wrong.

The irony is that all the energy spent hiding doubt could go into the work itself. Left unchecked, that pattern doesn't just feel bad — it slows careers and drains people who are perfectly capable.

What helps

Say it out loud, once

Not to the whole team, and not as a confession. To one trusted person. Someone who will say "yes, me too" rather than rush to reassure you. Naming it takes the sting out; it stops being a shameful secret and becomes an ordinary human experience with a name.

Build a proof file

Memory is biased towards criticism. Keep a folder — notes, emails, screenshots, a document on your phone — of concrete evidence. Add to it when things go well, and read it before interviews, appraisals or a difficult conversation. Useful entries include:

1. Something you handled this year that would have floored you three years ago.
2. A comment someone made about your work that you brushed off at the time.
3. A moment you said "I don't know" and the room carried on regardless.

Separate the feeling from the fact

"I feel like I don't know what I'm doing" is a feeling, not a verdict. Ask what the evidence actually is. Ask what you'd say to a colleague who told you the same thing. Ask what you'd want them to do next — then consider doing it.

Change the question

Replace "Do I belong here?" with "What does this need from me right now?" Belonging isn't a test you pass once and keep the certificate. It's built by turning up, contributing and staying through the awkward early phase.

It also helps to stop performing certainty. "I don't know yet — I'll find out and come back to you" is a competent sentence. Saying it usually costs far less than the fear suggests.

Ask for specific feedback

Vague praise slides straight off. "What was most useful about that?" and "What would have made it stronger?" give you something solid to hold. Specific information is much harder to argue with than "you were great".

Do the small thing anyway

Confidence tends to follow action rather than precede it. You don't have to feel ready. You have to ask the question, send the message, put the idea forward. The feeling catches up later, or it doesn't — and the work still gets done.

What doesn't help

• Waiting to feel confident before you act.
• Over-preparing past the point of usefulness — give preparation a stop time.
• Comparing your messy middle to someone else's polished finish.
• Collecting reassurance without ever testing it against reality.
• Reading endlessly about the topic instead of doing one small thing today.

One more thing worth saying plainly: imposter feelings aren't a clinical diagnosis. They overlap with anxiety, and if the doubt is affecting your sleep, appetite, mood or your ability to function day to day, that deserves proper support. Speak to your GP or a qualified therapist. This is general information, not medical advice.

A practical plan for the next two weeks

1. Tell one trusted person how you feel. Once is enough.
2. Start a proof file and add three items this week.
3. Before your next meeting, write down one sentence you intend to say out loud.
4. After your next piece of work, ask one specific question about it.
5. Notice where you're about to over-prepare, and decide in advance where you'll stop.

You won't think your way out of this in an afternoon, and you don't need to. The aim isn't to eliminate doubt — plenty of people doing interesting work carry some around with them. The aim is to stop letting it make your decisions for you. Do the work, keep the evidence, and let the feeling come along for the ride.

Photo: Ivan S / Pexels