How to Train AI to Write in Your Brand Voice (So It Actually Sounds Like You)

I had a full-on fight with ChatGPT last year.

Me vs. the robot. And I was losing.

I was trying to get it to write an email about evergreen funnels, and every draft it gave me sounded like some corporate marketing manager wrote it.

“We’re excited to share our revolutionary evergreen funnel strategies that will help you navigate the ever-changing landscape of digital marketing.”

🤮

I kept tweaking prompts. Adding more details. Explaining my brand voice. “Make it sound like me. More blunt. Add some personality. Use analogies that Millennials will like.”

An hour later, I was still editing robot words, trying to make them sound human.

This wasn’t saving me time. It was costing me sanity.

Here’s the thing: if AI content feels generic or “meh,” it’s almost always because it doesn’t know you. Not really. Not the way it needs to in order to actually write like you.

That’s when I realized I was doing it all wrong. The problem wasn’t the AI. It was that I hadn’t given it the right blueprint of ME.

So I created something that changed everything about how I use AI in my business. And now? The AI writes emails that sound like me. Creates captions that capture my tone. Even knows which words I’d never use (looking at you, “girlboss” 🙄).

Let me show you exactly how to make this happen.

Why Does AI Content Sound So Generic?

AI produces bland, corporate-sounding content because it’s pulling from generic training data—not from your specific voice, audience, or brand personality.

Most people try out the basic version of ChatGPT or another tool, get a mediocre outcome, and decide AI doesn’t work. That’s not the tech failing you—it’s the setup.

Think about it this way: would you hire a writer without telling them about your brand voice? Your audience? Your unique approach?

Of course not. Yet that’s what everyone does with AI.

They type “write me a newsletter” and expect gold. They get corporate speak instead. Then they spend an hour editing robot words into something that vaguely sounds like them.

That’s not AI working FOR you. That’s AI creating MORE work.

The entrepreneurs seeing real results from AI aren’t using it like a magic search engine. They’re training it specifically for their business, their voice, and their audience.

Trust me on this one.

What’s the Secret to Making AI Sound Like You?

You need a comprehensive Brand Book—a single document that captures your voice, audience, offers, and personality so AI has the blueprint it needs to write like you.

Before you build ANY AI assistant, write a Brand Book first.

Think of it as the training manual you’d give a new hire. It should include:

A deep dive into your ideal client’s triggers, goals, fears, and how they make decisions. Not surface-level demographics—actual psychographic insights about what keeps them up at night and what makes them buy.
Your voice, tone, and style. The things that make your writing recognizably YOU. Your go-to phrases. Your humor style. The words you love and the words you’d never use.
Clear descriptions of your offers and methodology. So the AI understands what you sell and how you help people—not just generic “coaching” or “courses.”

This document becomes the foundation of every AI assistant you create.

When I fed my Brand Book to ChatGPT for the first time, the difference was WILD.

The AI suddenly wrote emails that sounded like me. It created captions that captured my tone. It even knew which stories to reference and which phrases to avoid.

My team was shocked. My audience couldn’t tell the difference.

And the best part? What used to take me hours now took minutes.

What’s the Difference Between AI With and Without a Brand Book?

Without a Brand Book, AI gives you generic, forgettable content. With a Brand Book, it produces on-brand content that sounds authentically like you.

Let me show you exactly what I mean.

I ran the same basic prompt through ChatGPT twice—once without my Brand Book, once with it attached.

The prompt: “I was recently a guest on the AI Explored podcast. Here’s the article from my interview. Write an email for my list that gives good tips from the interview, making it relevant for them and their business.”

The version without my brand book was generic, bland, and sounded corporate and boring AF. The version with my brand book? Waaaay more on point.

Can you zoom in and see the difference? 👀

Same prompt. Same AI. Completely different output.

The version with my Brand Book has my voice, my phrases (“hot take,” “that’s not the move,” “trust me on this one”), my formatting style, and my actual perspective on AI.

That’s the power of training AI on YOU.

What Should Your Brand Book Include?

A complete Brand Book includes four core sections: brand voice, audience insights, offer suite, and key brand assets.

Here’s how I structure mine:

1. Brand Voice

This is where you define the tone, style, and personality of your brand. Not just “friendly and professional”—that’s useless. Get specific.

What are your go-to phrases? What words do you love? What words would you NEVER use? What’s your humor style? How do you handle controversial topics?

For me, this section includes things like:

Always say: YES, Incredible, Nailed it, What a vibe, Crushed it, LFG, Hot take, That’s the move, Trust me on this one
Never say: Girlboss, Boss Babe, Synergy, Guru, Ninja, Rockstar, Heart-centered
Tone: Blunt, direct, a little sassy. Educational but never boring. Confident without being arrogant.

When AI knows these specifics, it stops defaulting to generic corporate speak.

2. Audience Insights

This is an in-depth profile of who you’re speaking to—their needs, their fears, their desires, and how your brand solves their problems.

Don’t just write “female entrepreneurs aged 25-45.” That tells AI nothing useful.

Instead, document:

What are their catalyst moments? (The specific triggers that make them seek a solution)
What’s their “living hell” scenario? (What they’re desperately trying to escape)
What’s their dream scenario? (What they’re moving toward)
What language do they use to describe their problems?
What objections do they have about solutions like yours?

The more specific you get here, the more your AI content will actually resonate with real people.

3. Offer Suite

Outline your offers, funnels, and lead magnets in one place. This way, AI understands what you sell, how you help people, and how your offers connect to each other.

For each offer, include:

The core promise
What’s included
Who it’s for
Key differentiators
Common objections and how you address them

When AI knows your offers deeply, it can write sales copy that actually converts—not generic “buy my thing” content.

4. Key Brand Assets

Compile your bios, headshot links, logos, aesthetics, and other brand essentials for easy access and consistency.

This section is also clutch for podcast interviews, summit appearances, and onboarding team members. No more scrambling to find your bio or headshot link.

How Long Does It Take to Create a Brand Book?

With the right prompts and process, you can create a comprehensive Brand Book in about two hours—and it will save you hundreds of hours over time.

Real talk: quick-fix brand documents are missing about 90% of what actually matters.

Throwing a few writing samples at ChatGPT and asking for a brand guide will get you a generic 3-page overview. Shallow. Surface-level. Not actually useful for creating content that converts.

That’s why I created the 2-Hour Brand Book process. Not because it’s quick (though 2 hours is pretty efficient), but because that’s how long it takes to do this RIGHT.

The prompts I’ve developed aren’t basic questions. They’re strategically sequenced, multi-layered prompts that uncover insights about your brand, your audience, and your offers that you might never have articulated before.

One of my students, Kelly Ruta—a licensed clinical psychotherapist turned high-level mentor who works with 6- and 7-figure entrepreneurs—created a 140-page Brand Book using this process.

Her mind was “officially blown” (her words).

She immediately told her entire coaching group “they all needed to go buy the Brand Book ASAP.”

140 pages might sound like overkill, but here’s the thing: the clearer you are about your brand, your audience, and your offers, the easier EVERYTHING becomes in your business.

Marketing gets simpler. Sales become more natural. Content creation becomes effortless. Team members understand the vision faster.

Two hours of work. Hundreds of hours saved.

Grab the 2-Hour Brand Book and build yours this week →

How Do You Actually Use Your Brand Book with AI?

Upload your Brand Book at the start of any AI conversation, or build it into custom GPTs and Claude Projects so it’s always working in the background.

Once you have your Brand Book, here’s how to put it to work:

Option 1: Upload It Every Time

The simplest approach: just attach your Brand Book document whenever you start a new AI conversation. Tell the AI to reference it for voice, audience, and offer context.

This works, but it’s a bit clunky if you’re using AI constantly.

Option 2: Build Custom GPTs (ChatGPT)

Create custom GPTs with your Brand Book baked into the instructions and knowledge files. Now every time you use that assistant, it already knows your brand inside and out.

I have different custom GPTs for different tasks—email writing, social captions, podcast show notes—and they ALL have my Brand Book as their foundation.

Option 3: Use Claude Projects

This is what I’m leaning heavily into right now. Claude Projects let you keep all your brand context, past content, and guidelines in one place. Claude “remembers” everything about your business across conversations.

Game-changer for consistency. 🤌

The Key: Don’t Skip This Step

Whatever method you choose, the Brand Book is non-negotiable.

Without it, you’re just getting generic AI output that requires heavy editing.

With it, you’re getting content that sounds like you wrote it on your best day—in a fraction of the time.

What If AI Still Doesn’t Sound Right?

If your AI output still feels off, the issue is usually not enough specificity in your Brand Book—especially around voice and audience language.

Here’s how to troubleshoot:

Problem: Content is too formal or corporate → Add more examples of your actual writing to your Brand Book. Include emails, captions, or posts that really capture your voice. Show, don’t just tell.

Problem: Content doesn’t resonate with your audience → Your audience insights need more depth. Add actual language your audience uses—pull from DMs, comments, sales call notes, or testimonials.

Problem: Content is generic and forgettable → Add your hot takes and opinions. What do you believe that others in your industry don’t? What advice do you disagree with? AI can’t manufacture your unique perspective—you have to give it that.

Problem: Content doesn’t match your offers → Expand your offer descriptions. Include the transformation you provide, not just the features. Add objection handling and positioning.

The more specific your Brand Book, the better your AI output. It’s that simple.

Download the Personality Manifesto exercise as your first step.

Download the Personality Manifesto

What’s the Biggest Mistake People Make with AI Voice Training?

They try to train AI on samples alone, without documenting the strategy and psychology behind their voice and audience.

Here’s the trap I see constantly:

Someone uploads a few of their best emails to ChatGPT and says “write like this.”

The AI mimics the surface-level patterns—sentence length, some vocabulary—but misses the WHY behind the writing.

Why do you use that particular hook structure? Why do you address that specific objection? Why do you tell stories in that order?

AI can copy patterns. It can’t reverse-engineer strategy.

That’s why your Brand Book needs to include the thinking, not just the examples. When AI understands:

Why your audience responds to certain triggers
What objections you’re preemptively handling
How you build trust through specific story elements
What makes your methodology different

…then it can generate content that actually WORKS, not just content that superficially sounds like you.

The incredible thing? Most entrepreneurs discover things about their own audience they never realized before going through this process.

It’s market research, brand strategy, and AI training all rolled into one.

Ready to Make AI Actually Sound Like You?

Look, you can keep fighting with AI. Keep editing generic robot content into something that vaguely resembles your voice. Keep spending hours on work that should take minutes.

Or you can build your Brand Book once and have AI that actually works for you.

The 2-Hour Brand Book gives you:

Step-by-step walkthrough to create every essential section
Advanced prompts that do 95% of the work for you
A document that becomes the backbone of your entire business

This isn’t just about AI. Your Brand Book becomes the essential tool for collaborations, podcast interviews, summit appearances, and onboarding team members or contractors. No more answering the same questions over and over.

Get your 2-Hour Brand Book here →

Because life’s too short to fight with robots.