You don’t reach the top of your profession or field of endeavor only to then start behaving like a champion.
You reach the pinnacle of excellence by living and breathing the actions and habits of a champion.
Shifting your mindset and behavior comes first.
Once you flip that switch and commit all you have to it, everything else tends to fall into place.
It won’t be immediate, but if you pursue it all day every day you’ll catch excellence in the end.