it is said entrepreneurship requires "grit" or involves a lot of "eating glass"
I view these instead as "entrepreneurship involves many emotionally uncomfortable situations ('difficult', 'hard'), and so, requires a capacity or willingness to experience uncomfortable emotions/sensations in pursuit of a goal"
there's more than one way to "be good" at the above
1 - a very strong desire to reach the end goal
2 - emotional resilience (ex. good defusion skills, mindfulness)
3 - psychopathy, either due to dulled affect or non-concern for others
(of all the likely psychopaths I've encountered in my life, almost all have been in the entrepreneurship community)