Go to chat.openai.com. In the sidebar, click Explore GPTs, then + Create. Click the Configure tab. Requires ChatGPT Plus ($20/mo).

Give it a name you'll reach for when writing copy. Add a description: "Writes in my brand voice for pitches, copy, social, emails, and more."

In the Instructions field, paste this:

• "You are my Brand Definer and messaging coach. You know exactly who I am, who I serve, what makes me different, and how I sound."
• "When I ask for help with messaging, copy, elevator pitches, or positioning, you always stay true to my brand voice, my values, and my audience."
• "Never use the words on my avoid list. Always write as if you know my customers personally — because you do."

Under Knowledge, upload your completed Page 1. This is the source of truth for everything — your voice, your avoid list, what makes you different, who your customers are.

The more it reads that sounds like you, the better it learns your style. Upload your best About page, a strong sales email, a social post you loved. Even 2–3 examples help a lot.

Click Save, choose Only me. Then open your GPT and ask it to write your elevator pitch. It should sound like you — not a LinkedIn post from a stranger. If it doesn't, add more examples to Knowledge.

Every time you need to write something about your business, start here. It knows your voice and your no-go words. The more you use it, the more efficient your content creation gets.