In Georges St-Pierre's autobiography "The Way of the Fight", GSP's coach Firas Zahabi gives an homage to his prize pupil's work ethic, as well as to the concept of hard work as a whole:
His greatest ability is his perseverance. There’s an understanding we have between us that results and success come from one place: hard work. We agree with Holmes. We think it’s fair: you get back what you put in. People can cheat or rob you of almost any possession, but hard work belongs to you, and you alone. Georges knows that better than anyone I've ever known or heard of. So Georges’s work ethic is his greatest gift
It's a very profound passage by Zahabi. Indeed many people revere hard work above anything else and oftentimes many people don't even feel they deserve something if they haven't toiled for it immensely.