When you notice a small mistake, write down what happened, decide whether anything still needs correcting, and make one clear repair. This guide walks through sending a colleague a figure from the wrong version of a spreadsheet, including a short message template and a point where you can stop.
Use this for an ordinary slip with a clear fix
You emailed a colleague a summary on Tuesday morning. At lunch you notice that one figure came from last week's version of the spreadsheet. Nobody has replied yet. Your stomach drops, and the mind starts drafting explanations, apologies and imagined conversations at once.
This walkthrough is for small, everyday mistakes: a wrong time, a missed attachment, an outdated number, a forgotten reply. It is not a substitute for formal procedures. If a mistake involves safety, health, money, legal duties or someone's wellbeing, follow your workplace's or organisation's process and tell the right person promptly.
Step 1: write what happened in one plain sentence
Describe the slip as a fact someone else could check: I sent the Q3 total from last week's version; the correct figure is 14,200, not 13,850. Leave out verdicts such as I'm so careless for now. They are not part of the information the other person needs.
If you are not yet sure whether it was a mistake, check that first. A quick look at the source can save an apology for something that was actually right.
Step 2: ask what the mistake actually affects
Consider who has used, or might use, the wrong information, and what would happen if it stayed uncorrected. In the example, the colleague might copy the figure into a report. That makes a correction worthwhile today. A typo in a casual message that nobody will act on might need no correction at all.
NHS problem-solving guidance suggests separating problems you can act on from hypothetical worries. Here, the wrong figure is a problem you can act on. Will my manager think less of me? is a hypothetical worry. It does not have an action that settles it, so it waits outside this list.
- Who received or relied on the mistake?
- Could it lead to a further error, cost or delay if left?
- Is there anything else to correct, such as a shared file or a booking?
Step 3: fix the source before sending the message
Where you can, correct the underlying item first: update the shared file, amend the booking, attach the right document. Then your message can point to something that is already fixed instead of promising to sort it out later.
If the fix depends on someone else, say what you need from them and by when it matters, rather than leaving an open-ended problem in their inbox.
Step 4: send one clear repair message
A useful repair message usually has three parts: a brief acknowledgement, the corrected information, and anything the other person needs to do. It rarely needs a detailed account of how the mistake happened.
Template: Quick correction: [what was wrong]. The right [figure / time / file] is [correct detail]. [What, if anything, they need to do]. Sorry for the mix-up.
This template is an original editorial example, not a required script or a tested method. Adjust the tone to your workplace and the relationship. If the mistake caused someone real inconvenience, acknowledge that specifically and offer what you reasonably can.
Resist turning the repair into a series of apologies. A long apology can accidentally hand the other person a job: now they have to reassure you. A short, clear repair usually respects their time more.
Worked example: the outdated spreadsheet figure
What happened: the summary email used last week's Q3 total. Affected: one colleague, who may use it in Thursday's report. Fixed at source: the shared summary file now shows 14,200. Message: Quick correction to this morning's summary: the Q3 total should be 14,200, not 13,850. I've updated the shared file too, so the version there is current. Sorry for the mix-up.
That is the repair. You do not need to send a second message checking that they are not annoyed, or to explain the version history unless they ask. One small process change is optional: I'll check the file date before copying figures.
Step 5: check the verdict once, then decide the matter is closed
After the repair, the replay may continue: Everyone will notice. I always do this. NHS guidance on reframing unhelpful thoughts suggests catching the thought, checking it and, if you can, finding a more balanced version, including asking what you would say to a friend in the same position.
If a colleague told you they had sent an outdated figure and corrected it within the hour, you would probably not call them careless. You might say: That happens. You sorted it. Trying that same tone with yourself is not letting yourself off the hook; you have already done the responsible part. The NHS page also notes that you will not always manage to change a thought, and that is fine.
The Centre for Clinical Interventions' self-compassion workbook describes how readily people berate themselves for small mistakes. Its modules are written for people working on persistent self-criticism; this guide borrows only the everyday idea that a kinder, more balanced response can sit alongside taking responsibility.
Then write a stopping note: Corrected at 13:05. Nothing else to do unless they reply with a question. If the thought returns, read the note instead of starting the review again.
Stopping point: when you can leave it
You can usually consider an everyday mistake handled when the wrong information has been corrected, the people affected know what they need to know, and any open dependency has a time to check. Feeling completely calm about it is not a requirement for being finished.
If worry about mistakes is persistent, very distressing, or affects your sleep, work or daily life, consider speaking with a GP or another qualified professional. This guide is educational; it does not diagnose or treat the reasons a mistake may feel hard to let go.
Sources
- NHS Every Mind Matters — Problem solving (separating problems you can act on from hypothetical worries; making a specific plan)
- NHS Every Mind Matters — Reframing unhelpful thoughts (catch it, check it, change it)
- Centre for Clinical Interventions — Building Self-Compassion, Module 1: Understanding Self-Compassion (PDF; self-criticism after small mistakes)