How to Use ChatGPT (or Any AI Assistant) for Real Work

Here’s how most people use ChatGPT: open a new chat, type one line, get a generic answer, decide it’s “fine.”

Here’s how people who get real value use it: they’ve told it who they are, they feed it the right material, they ask for a specific output, and they push back until it’s right.

Same tool. Completely different results.

This guide covers how to use ChatGPT for work, but I’ve written it so it applies to any major assistant, including Claude and Gemini. The habits matter more than the logo. Product features and menus change constantly, so I’ll describe capabilities in general terms; check the current help pages for the exact buttons.

Step 1: Give it context before you give it a task

An assistant knows a lot about the world and nothing about you. Every answer gets better when you close that gap.

Before a real task, tell it:

• Who you are: your role, your business, your customers.
• What you’re working on: the project, the goal, the deadline.
• What good looks like: tone, length, level of detail.
• What to avoid: jargon, hype, promises you can’t make.

That can be two sentences at the top of the chat. It changes everything after it.

Step 2: Set custom instructions once

Most major assistants let you save standing instructions that apply to every conversation. Different products call it different things, but the idea is the same: tell it once who you are and how you like answers.

Here’s the kind of thing I’d put there:

I run [TYPE OF BUSINESS] serving [CUSTOMERS] in [REGION OR MARKET]. I prefer short, direct answers in plain language. Use headings and bullet points for anything longer than a few paragraphs. If you’re unsure about a fact, say so instead of guessing. Never invent statistics, sources or figures. When I ask for writing, match a warm, confident, no-hype tone.

Now every chat starts from a better place.

Step 3: Use projects or workspaces for ongoing work

Many assistants let you group chats and files into a project or workspace with shared instructions and reference material. Use this for anything you return to: a client, a product launch, your hiring, your marketing.

Load it with the material a new hire would need. Your service descriptions, a style guide, past examples you liked, your FAQ. Then every chat in that project starts already knowing the background.

This is the single biggest jump in quality for most business users.

Step 4: Bring files, not summaries of files

Don’t describe a document. Give it the document, if your data rules allow.

Assistants can typically read uploaded files: PDFs, spreadsheets, transcripts, slides. Ask it to summarize, pull out decisions, compare two versions, find gaps or turn a long report into a one-page brief.

Two cautions. First, data. Strip names and sensitive details unless your settings are approved for them. Second, accuracy. When it pulls a fact or figure from a file, spot-check it against the original.

Step 5: Use voice when you think out loud

Many assistants have a voice mode. It’s underrated for owners.

Talk through a problem on a drive. Explain a process out loud and ask it to turn your rambling into steps. Rehearse a hard conversation. You’ll often get further talking for five minutes than typing for twenty.

Step 6: Iterate. The first answer is a draft.

Don’t accept the first output and don’t start over when it’s off. Tell it what’s wrong.

• “Too formal. Make it sound like a text from a friend.”
• “Cut it in half.”
• “You assumed we offer refunds. We don’t. Rewrite.”
• “Good structure, but the third point is weak. Give me three alternatives.”

Every correction teaches it what you want inside that conversation. Three rounds of feedback usually beats any single perfect prompt.

ChatGPT for business owners: the work tasks to start with

Start with tasks that are frequent, easy to check and low-risk if the first draft is rough.

When you want ready-made versions of these, my guide on how to write AI prompts has copy-paste templates.

ChatGPT tips that keep you out of trouble

• Verify facts, figures, quotes and sources. Fluency isn’t accuracy.
• Keep money math in your own tools. Use AI for words and structure; run numbers yourself.
• No legal, tax or medical decisions from a chatbot. Use it to prepare questions for a professional.
• Human review before customers see it. Every time.
• Write an AI policy if you have a team. Approved tools, data rules, review steps. My AI policy for employees guide shows what to cover.

Which assistant should you use?

Honestly? Try more than one on your own real work. As of October 2026, OpenAI makes ChatGPT, Anthropic makes Claude, and Google makes Gemini, and each of them keeps shipping new models. They each have strengths, and plenty of people use two. I use different tools for different jobs in my own businesses.

Run the same three real tasks through each and keep what fits how you think. I lay out a fair way to compare them in ChatGPT vs Claude vs Gemini.

How I use an assistant every day

Even with agents running work across my companies, I still open a plain assistant daily. I use projects to keep context for each business, I talk through decisions in voice mode while I drive, and I paste in transcripts to pull out action items. When I catch myself giving the same instructions repeatedly, that’s my cue to write the process down and hand it to an agent.

That’s the path: chatting, then saved instructions, then written processes, then AI agents doing the work.

Your next step

Set your custom instructions today. Then create one project for the part of your business that eats the most writing time and load it with the background a new hire would need.

Use it for a week and you won’t go back. When you’re ready for the full picture, start with how to use AI and watch my builds on YouTube. If you’re an owner who wants AI doing work instead of just answering, see how Chief works.