How to find and define your writing voice (and keep it when you use AI)

“Write in your own voice” is advice everyone gives and few people explain. What does it mean? How do you know when a post sounds like you? And how do you keep that sound if a tool or an assistant is helping with drafts?

Your voice is not a mystery. It is a set of habits: the words you reach for, the length of your sentences, how you open, what you leave out. Once you can name those habits, you can write with them on purpose, and you can tell an editor, a colleague or an AI tool exactly what to protect.

This guide walks through a method you can finish in about an hour.

Step one: collect your samples

Start with evidence. Gather ten to fifteen pieces of your own writing that you are proud of and that feel like you. Good sources:

• Past LinkedIn or X posts that got good responses or that you simply liked writing.
• Emails to colleagues or clients that you wrote quickly and naturally.
• Comments you left on other people’s posts.
• Messages to a friend explaining something you know well.
• A transcript of you explaining an idea out loud, if you have one.

Mix formal and informal pieces. Avoid anything heavily edited by someone else, because that is their voice, not yours.

Paste them into one document so you can see them together. Seeing ten pieces side by side is surprisingly revealing.

Step two: spot your patterns

Read through the samples slowly with a pen or a highlighter. Look for patterns in these areas.

Sentence length. Do you write short punchy lines, long flowing ones, or a mix? Do you use one-sentence paragraphs?

Openings. How do you start? With a story, a blunt statement, a question, a number? Which of your openings did you like best?

Vocabulary. Which words come up again and again? Do you say “use” or “utilise”, “help” or “facilitate”? Do you use contractions? Slang? Technical terms without explaining them?

Tone. Are you dry, warm, playful, direct, cautious? Do you joke? Do you hedge or commit?

Structure. Do you use lists, headings, or plain paragraphs? Do you end with a question, a lesson or just stop?

Point of view. Do you write “I” or “we”? Do you speak to “you”? Do you tell personal stories or stick to observations?

Write down what you find as plain statements. For example:

• “I use short sentences and often one-line paragraphs.”
• “I start with a specific moment, not a general claim.”
• “I write ‘you’ a lot and say ‘I’ when admitting a mistake.”
• “I explain jargon the first time I use it.”
• “I end on a practical takeaway rather than a big conclusion.”

Ten to twelve lines like these is a voice guide.

Step three: write your never-say list

Equally important is what you would never say. Everyone has words and phrases that make them wince, and AI-generated text tends to be full of them. Go through your samples and your own instincts, and write a never-say list.

Common candidates:

• “In today’s fast-paced world”
• “Unlock the power of”
• “Game-changer”
• “Let’s dive in”
• “I’m thrilled to announce”
• “At the end of the day”
• Stacked hashtags, or emoji at the start of every line
• Long dashes used as dramatic pauses, if you do not write that way

Add your own. If a phrase would make a friend roll their eyes when you said it out loud, it goes on the list.

A never-say list is useful for two reasons. It sharpens your own editing, and it gives a tool or assistant clear rules about what to avoid.

Step four: try a test draft

Now test it. Pick a topic you know well and write a short post, then compare it to your voice guide:

1. Does it use the sentence lengths you identified?
2. Does it open in your usual way?
3. Is anything on the never-say list?
4. Read it aloud. Where do you stumble or feel you are performing?

The places where you stumble reading aloud are nearly always the places where the voice slipped. Rewrite those lines the way you would say them in conversation.

Step five: run an edit loop

Voice is not fixed, and your guide is not finished after one pass. The simplest way to keep it accurate is a small loop you repeat whenever you write:

1. Draft quickly, by yourself or with a tool.
2. Compare to your guide. Mark anything that does not sound like you.
3. Edit until you would happily say it out loud.
4. Notice what you changed. If you keep deleting the same kind of phrase, add it to the never-say list. If you keep adding the same kind of detail, add it to your guide.
5. Repeat.

After a few rounds you will find your guide has grown sharper, and your first drafts need fewer changes.

Using AI without losing your voice

If you use AI to draft, your voice guide becomes the most valuable thing you have. A tool that knows nothing about you will write like everyone else. A tool that has your samples, your habits and your never-say list can start much closer.

Some practical tips:

• Give it real samples, not a description alone. “Warm but direct” means different things to different people.
• Include the never-say list in your instructions.
• Ask for a rough first draft, then edit, rather than expecting a finished piece.
• Always review the result. A tool can drift back to generic phrasing on any given draft.

Reply Monk is built on this approach. You can paste a few of your posts, or import your LinkedIn or X archive, and it builds a picture of how you write; the Voice page also has a “not like me” never-say list, and it keeps learning from the edits you make. Its “Sounds like you?” check gives a quick sense of how close a draft is to your voice. It is still a draft aid: you decide what goes out. To spot the stock phrases that belong on a never-say list, the free AI phrase checker is a quick place to start, and our piece on using AI without sounding like a bot covers the rest of the routine.

When your voice changes

Your voice will evolve. You may become more direct, more technical, or more relaxed as you gain confidence. That is fine. Revisit your guide every few months, add newer samples and drop older ones that no longer feel like you.

A quick recap

• Collect ten to fifteen of your own samples.
• Identify patterns in sentence length, openings, vocabulary, tone and structure.
• Write a short voice guide and a never-say list.
• Test with a draft and read it aloud.
• Edit in a loop, updating the guide as you notice habits.

A defined voice is not a constraint. It is what lets you write quickly, stay recognisable, and feel comfortable with everything you publish.