Tbf, he preached that mantra, but then did have a tendency to make lots of excuses.
Here he is bemoaning a penalty decision, playing 3 games in a week, and only having 48hrs to prep for a game, all in one interview. And talking about being away, if I want to nitpick. All excuses if you think about it. If you're good enough, all those things shouldn't matter.
https://www.rovers.co.uk/news/2024/october/26/eustace-frustrated-by--terrible--penalty-decision/
His actions didn't always match his proclamations.