I wonder how this translates to psychological fatigue when it comes to creative work? I remember thinking- I can't stand the crazy "work your asses off, zero d

I wonder how this translates to psychological fatigue when it comes to creative work? I remember thinking- I can't stand the crazy "work your asses off, zero days off, 24/7, successful people don't have time to sleep" rhetoric some people have, but I also can't shake the notion that I'm nowhere near as productive as I actually could be. I imagine people at the top of their fields are operating at near max optimal capacity- but I've just been so annoyed and frustrated lately by how difficult it is for me to reasonably tell whether I'm actually tired or I'm just bullshitting myself to procrastinate from my obligations/work (stuff that I actually like doing, that I actually think is important to me.) I have yet to have a conversation with anybody about this that I have found remotely satisfying. Maybe I'm looking for something that doesn't exist, and that I should focus entirely on the present. But I also know that I screw that up all the time... ah well. Back to work.