Whenever I think of perseverance, the first image that flashes in my mind is that of a boxer on his knees. Will he get up and give himself another chance to win? Or will he stay down? The images aren't abstract to me. When I was a cadet at West Point I took a P.E. course in boxing, so I know what it's like to get pounded. Getting up from the mat takes a lot of grit.
And has anybody said it better than Rocky?