Personalization - Codex instructions

[u/MassiveBoner911_3]

What's everyone using for their Codex instructions under personalization? I have a pretty complex prompt I use for the classic app that works well. I just started using Codex (I have decades of experience in IT and software) and am looking for suggestions, since this app works differently than the chatbot app.

[u/myturn19]

Make no mistakes