Walk: When I hear/see the words "I will never change my mind", I always think of my mom when I was growing up. She used to always say that quote "Never say Never".
In my case, I just take that quote and rephrase it. I say "Changing my mind is an option I will not allow myself to take". Basically the same thing,
it just reinforces to me that the decision is mine.
Over thinking results in unneeded confusion.
Take one day at a time.
I'm just doing what It takes for me to stay sober.
Good-luck to you