Myth: ChatGPT Memory Is Where Your Work Rules Belong
Myth vs fact: ChatGPT memory is not where work rules belong. Put standing rules in custom instructions and one client's rules in its Project.

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The guide in text
The myth
Memory is where your work rules belong.
The fact
ChatGPT decides what memory saves, and it may carry an old detail into a new task. Write the rules you always want in custom instructions, and one client's rules in that Project's instructions, which win over custom instructions.
From the Stepthrough AI glossary: ChatGPT memory, Project instructions
The full definition: What is ChatGPT memory? in the AI glossary, with an example from a free lesson, common confusions and tips.
Businesses and people in the examples are made up. The steps, screens and wording come from the free lesson and the Stepthrough glossary and prompt library.
Do it yourself, free
ChatGPT Projects: Keep Your Brand Voice, Files and Instructions in One Place. Set up a ChatGPT Project with your brand voice instructions, your price list and your style guide, so every new chat already knows your business. You do every step yourself in a practice copy of ChatGPT, it checks your work as you go, and “Do it for me” finishes any step you get stuck on. Free, and nothing touches your real accounts.
Start the free lessonRelated terms
Plain-English definitions, each with an example from a free lesson.
From the blog
ChatGPT Custom Instructions vs Project Instructions for WorkCustom instructions apply to every ChatGPT chat; project instructions apply to one client's chats and win. Where each rule goes, and memory's role.
Oct 17, 2026 5 min read
ChatGPT Projects: One Home per Client, Set Up OnceStop re-explaining each client to ChatGPT. Give every client one Project with instructions, files and project-only memory. Setup steps and upkeep.
Oct 17, 2026 5 min read
Does ChatGPT Remember Other Chats? Chat History vs MemoriesChatGPT can remember other chats through saved memories and the Reference chat history setting. What each one does, and how to control both at work.
Oct 17, 2026 6 min read
More visual guides
Mistake: Re-Explaining the Client in Every ChatGPT ChatA common ChatGPT mistake: explaining the same client again in every new chat. Give each client one Project with its own instructions and files.
Mistake to avoid 2 slides
Myth: A New ChatGPT Chat Is a Private ChatMyth vs fact: a new ChatGPT chat is saved like any other and memory can carry details. For a sensitive job, use Temporary Chat and remove names first.
Myth vs fact One graphic
Reply to case update emails with ChatGPT, safely"Did they respond? When is our court date? Are we going to win?"
Myth vs fact One graphic