I would say someone like David Goggins probably fits the bill. Some people find his level of drive inspirational, I find it deranged. Ultimately I suppose the outcomes are good. Great health (probably) and a great fitness influencer brand, but the desire for suffering that fuels it all and the incredible levels of self criticism and even hatred involved, make it seem far more like some kind of fitness anorexia than self care.
I think it would be reasonable to class his mode of being as that of individual growth mindset.