Why Quitting is Underrated:

This is the issue with grit. It can get you to stick to hard things that are worthwhile, but it can also get you to stick to hard things that are no longer worthwhile – like after your fibula snaps at mile eight. Throughout our lives, it turns out we are not very good listeners when the world tells us that we should stop.

There are a host of reasons why we ignore obvious signals to quit, not the least of which is that quitting has a nearly universal negative connotation. If someone called you a quitter, would you ever consider it a compliment?