In order to achieve an unstoppable mindset you must believe in yourself and understand like anything else this is a process.
You are going to have set backs, screw up, and there will even be days you fail and fall on your ass but YOU WILL NOT FN QUIT.
Here is a drill you can do to program the internal dialog.
You will create a “MOL”= Motto of Life.
This is a phrase or saying that you will say the second you get up and it will be the last thing you say before you go to bed.
For me I say “ Be GREAT today and Be a B!TCH tomorrow!” I simply program myself daily to get up and give it my all.
Tomorrow I will rest and take it easy but as soon as I go to bed and wake up I repeat being great. I don’t believe in days off only active recovery of GREATNESS.
So with that said come up with your own “MOL” keep it short, sweet, and to the point. Hell use mine for the time being but you need to develop one that suits you.