Gritty people wake up thinking about the same questions they go to bed thinking about.
I know the end of the article does touch on the negative aspects of grit, but the quote above makes me wonder what the difference between "grit" and "obsession" is. One is favorable, one is not. Thin line..
Gritty people will go have a beer at the end of the day and obsessive people will never get it off their chest.
There's always a fine line between any thing, mostly because the words used to describe "stuff" often comes quite similarly to the opposite of the action that's used to describe the "stuff".
It's literally application, learning, and knowing when to leave the party and sleep.
Definitely a weird balance to practice.