Your First AI Assistant That Actually Knows Your Business

Here's how most people use AI. They open it, type a question, and get an answer that could apply to anybody. Then they decide AI isn't that useful for their business.

The answer was generic because the AI knows nothing about you. It doesn't know what you sell. It doesn't know who buys it. It doesn't know how you talk.

You can fix that in twenty minutes, one time, and it stays fixed.

This guide uses ChatGPT because that's what most people already have. The same steps work in Claude if you prefer it.

What you need

A ChatGPT account. Go to chatgpt.com and sign up with your email. The free version works fine for this.

Twenty minutes and a quiet room.

Step 1: Tell it who you are

Look for Settings. Then find the section called Personalization, and inside it, Custom Instructions.

This is a box where you write things about yourself. ChatGPT reads it before every single conversation you ever have. You fill it out once.

Copy this, fill in the blanks, and paste it in:

CopyWHAT I DO
I run [your business]. We sell [what you sell] to [who buys it].
My prices are roughly [your price range].
Right now I'm focused on [main goal].

HOW TO TALK TO ME
Give me the answer first. Explain your reasoning only if I ask.
Short sentences. Plain words. No corporate language.
If I'm wrong about something, tell me.
Don't repeat my question back to me before answering.

WHAT I ALREADY KNOW
I understand [something you're good at]. Skip the basics of that.

IMPORTANT RULE
Never make up a number, a statistic, or a quote. If you don't know, say you don't know.

Save it.

Important: That last rule is the most useful line in this whole playbook. AI will sometimes state a wrong number with complete confidence. This cuts down how often that happens. It also reminds you to check anything important before you act on it.

Step 2: Make a folder for your business

In the left-hand menu, look for "Projects" and create a new one. Name it after your business.

A Project is a folder. Anything you put in it, every conversation inside that folder can see. This is how you stop re-explaining yourself.

Step 3: Put a few things in the folder

Add three or four files. Not everything — just the ones that matter:

• Your price list or service list
• Two or three emails you wrote that you were proud of
• A description of what you do

That's enough. Adding your whole computer makes answers worse, not better. The AI has to sort through everything you give it, and junk crowds out the useful stuff.

Gotcha: On the free version, how many files you can add is limited. If it won't take them, just attach the file to the conversation when you need it. Same result, one extra step.

Step 4: Test it

Open a chat inside that folder and try this:

CopyWrite me a short email to someone who asked about my prices two weeks ago and never wrote back. Keep it under 100 words. Sound like me.

Read what comes back. It should mention things about your actual business. It should sound closer to how you write.

If it doesn't, tell it what's wrong:

CopyToo formal. Shorter sentences. Cut the last paragraph.

Keep correcting it. Each correction teaches it something.

Step 5: Save what works

When it writes something you actually like, say this:

CopyRemember that this is the style I want for customer emails from now on.

That's it. You're done.

What to do next

Go use it for one real thing today. Not a test — something you were going to do anyway. Write a customer email. Draft a quote. Answer a question somebody asked you.

You'll find out fast whether the setup worked, and whatever's still off, you fix in thirty seconds.

Common mistake: People set this up and then keep opening brand-new chats outside the folder. Then they wonder why the answers went back to being generic. Work inside the folder. That's the whole point of it.