How to Make ChatGPT Sound Like Your St. Louis Business
Revised September 13, 2026
How do I get ChatGPT to sound like my business?
Give it real examples of your own writing and a short set of standing instructions. Paste in five to ten emails or posts you actually wrote, tell it to match your sentence length and tone, and save that direction in custom instructions so every future chat starts in your voice.
Keep reading ↓Imagine you run a two-person heating-and-cooling shop out of Affton. It’s nine at night, you finally sit down to clear a week of customer emails, and you ask ChatGPT to draft the replies. What comes back is… fine. Grammatically perfect. Weirdly formal. Nothing like the way you actually talk to a neighbor whose furnace just quit in January.
“We appreciate your inquiry and look forward to serving your needs.” You would never say that. And your customers, the ones who picked you because you sound like a real person, would notice in a heartbeat.
That gap — between how the machine writes and how you write — is why so many owners across St. Louis try ChatGPT once, wince, and go back to typing everything by hand. The good news: you can close the gap in about twenty minutes, and you only have to do the setup once.
How do I get ChatGPT to sound like my business?
Two moves, and neither one is technical. First, give it real examples of your own writing. Second, save a short set of standing instructions so every future chat starts in your voice instead of the factory default. Do those two things and the “corporate robot” tone mostly disappears. Everything below is just detail on how to do each one well.
How do you get ChatGPT to copy your writing style?
You show it, you don’t tell it. Pull together five to ten things you genuinely wrote — a few customer emails, two or three social posts, a paragraph from your website, a text you sent a regular. Real writing, not marketing copy someone else polished for you.
Paste them in and give one plain instruction: “Study how I write. Pay attention to my sentence length, how formal or casual I am, the words I lean on and the ones I never use. Then write the next thing in that same voice.” The model is genuinely good at pattern-matching a voice once it has samples in front of it. The mistake owners make is describing their style in adjectives (“friendly but professional”) instead of just handing over the evidence.
One caution worth knowing: newer versions can connect to your email or documents to “learn” your style automatically. That is convenient, but it means handing an outside company a pipe into your inbox. If that trades away more privacy than you are comfortable with, skip it — pasting a handful of samples by hand gets you ninety percent of the result and shares nothing you didn’t choose to share.
What should you put in the custom instructions?
Custom instructions are a small settings box where you tell ChatGPT, once, who you are and how you want it to respond. It then applies that to every new conversation, so you are not re-explaining your business every morning. In ChatGPT you’ll find it under your account settings — the exact menu name shifts as the product changes, so look for “custom instructions” or “personalization.”
Keep what you write there short and concrete. Three things earn their place: who you serve (“homeowners and small landlords in the St. Louis metro”), what you do (“residential HVAC repair and replacement”), and how you sound (“plain, direct, a little warm; short sentences; no corporate filler”). Add one line about what to avoid, because that is where the robot tone hides: “Never open with ‘In today’s fast-paced world.’ Never use ‘seamless,’ ‘top-notch,’ or ‘we appreciate your inquiry.’”
Not sure ChatGPT belongs in your business at all yet? Start here first.
What if you would rather talk than type?
Plenty of owners think faster than they type, and it shows — a dictated answer sounds more like you than a written one, because you stop performing and just talk. Use voice mode, or dictate into your phone, then ask ChatGPT to clean up the grammar without changing the words or the tone. You get your real cadence with the filler words trimmed. For a busy tradesperson standing in a driveway between jobs, that is often the whole game.
How do you strip the AI tells out of a draft?
Even a well-trained model leaves fingerprints. The em dash in every other sentence. The “it’s not just a repair, it’s peace of mind” construction. The tidy three-item list where a real person would have named one thing. Readers can’t always say why a paragraph feels machine-made, but they feel it, and feeling it is enough to lose trust.
The fix takes thirty seconds: read the draft out loud. Anything you stumble over or would never actually say, cut or rewrite. Then hand the corrected version back to the model and tell it what you changed and why — “I cut this because it sounded stiff; keep it this direct next time.” Do that a few times and it stops making the same moves. You are training it with edits, which teaches it far faster than more adjectives ever will.
Where else can this help around your shop?
Voice is only one job. Once a business has AI in its corner the uses multiply fast, because it is less a single tool than a tireless assistant that takes on whatever repeats. A bakery in Florissant could draft its weekly “what’s in the case today” post in the owner’s own words. A dentist in Webster Groves could turn the twenty questions the front desk fields all day into ready, on-brand replies. A landscaper could feed in a long supplier email and get back the three things that actually need a decision. A shop could paste a month of customer reviews and ask what people consistently praise and what quietly frustrates them. None of that is science fiction — it is the same drafting, summarizing, and pattern-finding the model already does, aimed at a different corner of the day. Which is exactly why teaching it your voice once pays off: everything it drafts afterward already sounds like you.
Why let a directory teach you this?
Because the tools change every month, the national tutorials assume you have a marketing team, and almost none of them are written for someone running a real business off Gravois or Manchester Road. None of what’s above is a secret — thousands of people have worked out these same habits. What’s missing is a local, plain-English place that keeps up with the changes and translates them for St. Louis owners who have a trade to run and no time to sift through hype.
That is the job St Louis Near Me Directory is trying to do: be the hometown source for practical AI, one honest guide at a time. If a tool would cost you more than it saves, we’ll say so — the point is to protect your time, not sell you software.
Want the local, no-jargon version of AI for your business? We run plain-English AI workshops for St. Louis owners, and you can list your business so neighbors find you. Worth knowing too: none of this is free forever, so it helps to understand what AI actually costs a small business before you lean on it.
Frequently asked questions
How do I get ChatGPT to talk like me?
Show it examples instead of describing yourself. Paste five to ten things you actually wrote — emails, texts, posts — and tell it to match your sentence length, formality, and word choices. Then save that direction in custom instructions so it carries into every new chat rather than resetting to the default corporate tone each time.
How do you get ChatGPT to copy your writing style?
Give it real samples and ask it to study the patterns, not adjectives. It reads your rhythm, your go-to phrases, and your level of formality far more accurately from three genuine emails than from the words “friendly but professional.” The more of your own writing you feed it, the closer the match, so keep a small folder of your best examples handy.
What should I put in the custom instructions for ChatGPT?
Three short things: who you serve, what you do, and how you want to sound — plus one line on what to avoid. For a local business that might be “St. Louis homeowners,” “residential plumbing,” “plain and direct, short sentences,” and “never use corporate filler like ‘seamless’ or ‘top-notch.’” Keep it concrete; vague instructions produce vague, generic writing.
How do I set custom instructions for a ChatGPT project?
Inside a project or a saved chat, look for its own instructions or settings panel and add direction there the same way you would account-wide — it applies to just that project. This is useful when one project is customer emails and another is social posts, since each can carry a slightly different voice. The menu names move around, so search the settings for “instructions.”
How do you get ChatGPT to write like a human?
Feed it your voice, then edit the tells out. After it drafts, read the result aloud and cut anything you would not say — stacked em dashes, three-item lists, phrases like “in today’s fast-paced world.” Hand the corrected version back and tell it what you changed. A few rounds of that trains it to stop making the same machine-sounding moves.
How do I train ChatGPT on my own writing?
You are not fine-tuning a model — you are giving it context. “Training” here means supplying examples and standing instructions, then correcting its drafts so it learns your preferences within your account. Paste your samples, save your custom instructions, and feed back your edits. That combination gets a small business ninety percent of the benefit with none of the technical work.
What are common ChatGPT prompt mistakes?
Describing your voice in adjectives instead of showing examples, asking for too much in one prompt, and accepting the first draft without editing. The other big one is not telling it who the reader is — “write a follow-up email” gets a generic result, while “write a follow-up to a homeowner who got a quote last week and went quiet” gets something usable.
Should I connect my email so ChatGPT can learn my style automatically?
Only if the convenience is worth the access. Connecting your inbox or documents lets it pick up your voice without pasting samples, but it also hands an outside company a view into your correspondence. For most small businesses, pasting a handful of examples by hand gets nearly the same result and shares nothing you did not choose to share.
Written by a dedicated team of St. Louis locals who live, work, and play right here in the St. Louis metro. Founder Lane Forman and team are committed to building the region’s most trusted directory by verifying listings and connecting local businesses with loyal customers across Missouri and Illinois.