It's a real problem going up the ladder. What I mean by that is going from high school, to college to the nfl.
Just because you are good/great at 1 level doesn't mean you'll be good at the next.
My ex-wifes is married to a guy who in high school was an excellent golfer, in fact he beat the bears son. My ex-brother-in-law when golfing with him says he constantly shot in the mid to high 70s.
So one day I was talking to my husband in law and asked about golf...he said the problem was he could have been a great golfer but it issue was in his head and that's why he couldn't make the next level.