I spent 20 years in B2B sales before teaching myself to code last year. The old system prompt was basically "perform, close, optimize." It worked but it was running someone else's program. The rewrite happened when I got sober about two years ago and realized most of my default behaviors were inherited, not chosen.
Now I try to run on something closer to: "Build things that would have helped you when you were struggling. Ship before it's ready. Let people see the mess."
Great question...I think most people never examine their defaults, they just keep executing the prompt they were given as kids.