If you keep telling ChatGPT the same things at the start of every conversation, there is a simpler place for them: Custom Instructions. Use them for preferences that should follow you across chats. For a business owner, that might be your usual audience, preferred tone, spelling style, how concise you like answers, or a reminder to ask a clarifying question when key information is missing. Keep them broad and stable. Do not put this week's offer, a client brief, or changing prices in there. Those belong in the specific chat, where you can give ChatGPT the latest context. A useful starting point could be: "Write in plain English. Keep recommendations practical. Use short sections and examples. If information is missing, ask up to three focused questions before making assumptions." Then test it on a real task you do regularly. If the output still feels too generic, change one instruction at a time rather than adding a giant rulebook. Small, clear preferences are easier to check and improve. What is the one thing you find yourself repeating to ChatGPT most often?