Just curious: If you would precommit to never work more than 40 hours a week, but otherwise you would try your best, what is the probability you could make millions? Not just you personally, but any rather intelligent and rational person.

I understand why having friends, families, experience, or just enough time to relax, is more important than making millions. My question is how much of a dichotomy it really is; in other words whether refusing to work 16 hours a day, for decades is the true rejection, or just a socially acceptable excuse.

I don't know whether working really smart and hard 40 hours a week is enough or not to make millions. Or more precisely, I believe it is possible, but the important question is how probable it is. So far I can just say I don't seem to have the personality traits necessary to work really smart and hard 40 hours a week for long time periods. Which I classify under "not having necessary skills". But I believe that assuming the necessary skills, it is possible and decently probable (I just have almost zero evidence to support this belief, so I am not very confident about it).