Step-by-step
⚙️ ChatGPT
OpenAI
📘 Step-by-step guide 📘 OpenAI · ChatGPTbeginner 🔄 Life & Business

How to set ChatGPT custom instructions so it answers your way

Save time by teaching ChatGPT your personal preferences once for answers tailored exactly to you, every single time.

Tired of telling ChatGPT the same things over and over? Imagine never having to repeat your preferences – like your dietary needs, your job role, or your preferred writing style – every time you start a new chat. This guide shows you how to set up 'Custom Instructions' so ChatGPT remembers who you are and how you like things, saving you time and getting more relevant answers instantly.

✅ Before you start
  • You'll need a free or paid ChatGPT account from OpenAI.
  • Access to the ChatGPT website on a computer, or the official ChatGPT app on your mobile phone or tablet.
  • An active internet connection.
  • This guide will take roughly 5-7 minutes to follow.
  • Custom Instructions are available on both free and paid ChatGPT plans.
  • While custom instructions help tailor responses, ChatGPT cannot remember previous instructions from old chats, nor can it send emails or manage files for you.
1

Find the customisation settings

First, we need to locate the feature that stores your personal preferences within ChatGPT. If you're using a computer, look at the bottom-left corner of your screen. You should see your profile picture or your name there. Click on it. If you're using the mobile app, you'll need to swipe from the left edge of your screen to open the sidebar, then look for a cog or gear icon, usually near your profile name. When you click/tap, a menu or a new screen will appear.

💬 ExampleN/A for this step.

You'll know it worked when you see a menu slide up with options like "Settings," "Help," and "Custom instructions" (or "Personalise ChatGPT"). If it looks different, look for a gear icon, three horizontal lines (a "hamburger menu"), or tap your profile picture to find the main menu options.

2

Tell the AI about you (Box 1)

Now that you've opened the settings, click or tap on "Custom instructions" in the menu. A new window or screen will appear, usually split into two large text boxes. The first box, typically at the top, asks: "What would you like ChatGPT to know about you to provide better responses?" This is your chance to give the AI context about your life, work, or hobbies that it should remember for all future conversations.

💬 Example> - I am a freelance graphic designer based in Brisbane.
  • I mainly design brand logos and websites for local small businesses.
  • I cook for a family of four, and we prefer healthy, dairy-free meals. You'll know it worked when your text appears clearly visible in this first box. If it looks different, ensure you've selected "Custom instructions" and not a different settings page; if you only see one box, scroll down or look for a tab labelled "About Me" or similar.
3

Decide how you want the AI to reply (Box 2)

Next, you'll focus on the second text box, usually located below the first one. This box asks: "How would you like ChatGPT to respond?" Here, you can tell the AI about your preferred tone, length, format, and even specific language styles. This helps you get answers that match your needs without having to type a long "prompt" (which is the instruction you give to an AI, like handing a recipe to a chef) every single time.

💬 Example> - Keep your answers concise and highly practical.
  • Organise information with clear headings and bullet points.
  • Use a warm, friendly tone and use Australian English spelling (like 'colour' and 'organise').
  • Never make up facts; tell me honestly if you do not know the answer. You'll know it worked when your specific instructions about how the AI should respond are visible in this second box. If it looks different, double-check that you're typing into the box clearly labelled about response style or output format.
4

Save and test your new setup

Once you've entered your preferences into both boxes, look for a toggle switch, usually near the bottom of the window, next to "Enable for new chats." Make sure this toggle is turned on (it will typically show a bright colour like green or blue when active). Then, click the "Save" or "Update" button, often located in the bottom-right corner. After saving, start a brand-new chat session by looking for a "New chat" button or icon (often a plus symbol or a speech bubble).

💬 ExampleType a simple question into your new chat: "Give me three lunch ideas I can prepare in under 15 minutes."

You'll know it worked when ChatGPT’s response reflects the details you provided in your custom instructions – for example, suggesting dairy-free recipes that feed four people, without you needing to repeat those requirements. If it looks different, ensure you clicked "Save," and remember these settings only apply to new conversations, so always start a fresh chat to test.

⚠️ Common mistakes
  • Overcomplicating your instructions: Trying to fit your entire life story into the boxes can confuse the AI. Keep your points clear, direct, and focused on the tasks you do most often. The fix: Use simple bullet points and focus on the most important, frequent details.
  • Over-restricting the AI: If you write, "always keep responses under 50 words," the AI will struggle to write a longer email draft for you later. The fix: Keep your formatting and length preferences flexible, for example, "prefer concise answers, but be detailed when necessary."
  • Expecting past chats to update: Custom instructions only apply to new conversations. If you continue in an older chat, it will still use your old settings or the general default. The fix: Always start a completely new chat to ensure your updated custom instructions are active.
🚀 Try it now

Open ChatGPT right now, navigate to your settings, and turn on Custom Instructions. In the second box, under "How would you like ChatGPT to respond?", type: "Always summarise complex ideas using a simple analogy." Save it, open a new chat, and ask: "How does the internet work?" See how much easier the explanation is to understand when the AI knows exactly how you like to learn!

✦ Original step-by-step guide by AI World Co.'s AI editorial team. Written in plain language, reviewed for accuracy.

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