<i>The question being asked is whether grit is the one trait to rule them all.</i><p>That&#x27;s not the question I was addressing. I was addressing the extent to which one can attribute someone&#x27;s success to &quot;luck&quot;, and I argue that both grit AND luck can matter to one&#x27;s outcomes.<p><i>A lottery winner who might keep playing again and again and one day win the lottery have grit but it&#x27;s still luck if they win.</i><p>That&#x27;s not even remotely relevant, as a lottery is very specifically a game of chance.  Life involves an element of things you can&#x27;t control, but it also involves a lot of things you can.