If you’ve made up your mind about something, just stick to your guns.
You’re an adult. There’s no need for a babysitter.
If you have made a plan, thought it through, analyzed, calculated, made a flow chart (yeah, laugh, I’ve done it more than once, I LOVE flow charts.)
If after all of that, you still believe that you are right, then stick to it. Know what you know. Do what you do.