How to Make ChatGPT Sound Like You: My One-Page Fix

My husband stuck his head out the slider and asked who I was talking to.

Nobody. I was out on the lanai with my laptop, reading a blog draft out loud to two dogs who could not have cared less. The draft had my name on it, and the woman in it had never met me. She said things like "in today's fast-paced world." I've been in business for 25 years and I have never said that to a human being.

"That's very ChatGPT-ish," I said, mostly to the dogs.

If you want to know how to make ChatGPT sound like you, the short version is this. Stop asking it to "write in my voice" and give it one page to work from: three or four things you really wrote, a list of words you'd never say, and a few plain rules about how you talk. Paste that page in before you ask for anything. Then read what comes back out loud and fix the parts that make you wince.

That's the whole trick. The rest of this post is what's on my page and how I use it.

Why it comes out sounding like a brochure

ChatGPT has read more writing than any of us will see in ten lifetimes. When you give it nothing to go on, it hands you the average of all of it. Average is polite and padded. It's the voice of a hotel welcome letter.

And people notice. Clutch and Compose.ly surveyed 444 U.S. consumers in May 2026, and 66% said that if they found out an article was written entirely by AI, they'd either read less of it or be more skeptical of it. This summer Cashew Research asked 2,149 people in the U.S. and Canada and found 87% already believe the brand content they see is at least partly made with AI. Only 13% said they were very confident they could tell the difference.

Put those two together. Your reader is suspicious before she gets to your second sentence, and since she can't always tell for sure, she goes by feel. If your post feels like everybody else's, she's gone. I'm 57, and I would rather post nothing than post something that sounds like a stranger wearing my name tag.

The one page I paste in first

I call mine a voice page. It lives in a doc, and it has four parts.

1. Three or four samples of my real writing. I pick things I wrote fast and didn't polish, like a text to my team or an email I was proud of. Shiny, finished writing teaches it the wrong me.
2. Who I'm talking to, in one sentence. Mine is a woman around my age who is smart and tired of being sold to.
3. How I talk. Short sentences mixed with medium ones. Contractions. I say what I'd do and what I'd skip, and I use real numbers, including my age.
4. My kill list. Every word and habit that makes me cringe goes here, and I add to it whenever a draft annoys me.

The kill list does more work than the other three parts combined. Telling a machine what you like gets you mush. A list of what you refuse to say, it can follow. Mine has "journey" and "game-changer" on it, plus a rule against three sentences in a row that start the same way. That long dash ChatGPT loves so much is on there too. I don't type it, so it doesn't get to either.

How to make ChatGPT sound like you, step by step

1. Paste your voice page at the top of a new chat and say, "Read this first. Don't write anything yet. Tell me what you notice about how I write." What it says back tells you whether your samples are doing their job.
2. Give it the job in plain words, with the raw material. I talk mine out like I'm leaving a voicemail: who it's for and what I want them to do next.
3. Read the draft out loud. Every spot where you stumble or roll your eyes gets fixed or cut.
4. Tell it what was wrong in your own words. "Less polished, more like I'd actually text" is one I use constantly. Then add the offender to your kill list so you aren't fighting it again next week.

Once the page is working, save yourself the pasting. In ChatGPT, go to Settings, then Personalization, and put the short version in the Custom Instructions box. OpenAI's help page says that's available on every plan, with room for 1,500 characters on the free plan and 5,000 on the paid ones, as of October 2026. Fifteen hundred characters is tight, so my kill list and my "how I talk" rules go in there and the samples stay in my doc. The same page works in Claude or whatever tool you like.

If you'd rather start from my prompts than from a blank page, that's what AI Content Creation Hacks is for. It's $7, and it comes with my prompt cheat sheet.

What I still write myself

I've said before that AI does the parts that don't need my soul and I do the parts that do. Stories and opinions are mine. Anything about my family or a hard season gets typed by me, badly, and cleaned up afterward. AI can tidy a story, but it wasn't there.

I also don't let it make up facts about me. Left alone, it will happily invent a client or a number to make a paragraph prettier. If you're in network marketing that can get you in real trouble, because an invented result is an income claim with your name on it. So my page has one more rule at the bottom: if you don't know it, ask me.

Where I do let it run is the small stuff, like first drafts of follow-up messages and the one friendly text that goes out when I miss a call. It earns its keep at home too, like when I have it dig through our bills for savings.

Does this take forever?

Plan on about an hour for the first version. Most of that is digging up old texts and emails you wrote. After that it's two minutes here and there, every time a draft makes you wince and you add a line.

Give it a couple of weeks and you'll have drafts you barely touch.

One warning. Your voice moves, so the page has to move with it. Every couple of months, swap in something you wrote recently. I don't talk the way I did five years ago and neither do you.

Back on the lanai

I fixed that draft the slow way. I went line by line, out loud, and every phrase that made me wince went on the list.

These days when I read a draft out loud out there, my husband doesn't ask who I'm talking to. It sounds like me, so he figures I'm on the phone.

If you want a head start on your own page, grab AI Content Creation Hacks for $7. You get the core guide, my prompt cheat sheet and my caption formulas, so your next post starts from something that already sounds like a person.

Questions I get about AI and voice

Can ChatGPT really write in my voice?

Close enough that you'll edit instead of rewrite, once it has real samples and a kill list. It still won't know your stories or your opinions unless you hand them over. I treat it like a new assistant who types fast and needs clear instructions.

How many writing samples does ChatGPT need?

Three or four is plenty to start. Pick things you wrote quickly, in different moods, each a few paragraphs long. Mixing them up helps more than adding more.

Where do I put my voice instructions in ChatGPT?

On the website, go to Settings, then Personalization, and use the Custom Instructions box. In the phone app it's under Settings, then Customize ChatGPT. As of October 2026 the free plan gives you 1,500 characters, so lead with your kill list.

Will people know I used AI?

Some will guess, and most readers already assume everybody does. In the Cashew Research survey, 87% said they believe brand content is at least partly made with AI. What they're really judging is whether it sounds like a person who knows them. Write the stories yourself and read every draft out loud before it goes anywhere.