Like I do think you can go overboard with this. You don't have to turn into Jocko Willinck or become a desert father, but just realizing that you can just grit through stuff even though it may suck, it's so empowering.

I mean realistically if someone was attempting to get you to confess to something and they were torturing you by having you perform all these things you know you should be doing but don't really feel like doing today, it surely wouldn't come even close to breaking you? You've been made to book a dentist appointment to deal with that aching molar and forced to clean the oven and weren't given a cake for desert and now they want you to wash the car as well; if you're begging for mercy surely it's to escape from rolling at the floor form the laughably ineffectual torments.

Jocko’s and Goggins are good examples of it. And to be taken with a pinch of healthy salt

To achieve stuff you have to have something that enables you to do it. Call that motivation/discipline or whatever but the ‘ball has to roll’