How to Use Custom GPTs to Automate Your Repetitive Work

A Custom GPT is a version of ChatGPT pre-loaded with your instructions, knowledge, and tone. Instead of re-explaining context every time, you build it once and reuse it forever. Here’s how to make them work for you.

Why bother?

If you find yourself typing the same setup prompt repeatedly, that’s a Custom GPT waiting to happen. They save time, enforce consistency, and can be shared with your team.

How to create one

1. In ChatGPT, open Explore GPTs → Create.
2. Give it a clear role and instructions (use the techniques in our advanced prompts guide).
3. Upload reference files (style guides, docs) as knowledge.
4. Test, refine the instructions, and save.

5 high-leverage GPTs to build

1. Brand Voice Writer — loaded with your style guide and samples.
2. Email Responder — your tone + common reply templates.
3. Meeting Summarizer — paste a transcript, get decisions + action items.
4. SEO Brief Builder — turns a keyword into a structured content brief.
5. Code Reviewer — your standards baked in (pair with Cursor for in-editor work).

Custom GPTs vs prompts vs automation

• Prompt: one-off task.
• Custom GPT: repeated task, same context, manual trigger.
• Automation (Make/Zapier): repeated task, no human trigger.

Use the right tool for the frequency. For fully hands-off flows, graduate to automation.

Keep them sharp

Revisit your GPT instructions monthly as your needs evolve. Store the best prompt patterns in Notion AI. More in the ChatGPT category.