You are not stupid.
Now that the NFL season has concluded, it's time to praise these battle hardened warriors for their brilliance.
Seriously - check out how smart a football player has to be.
"The safety, standing at the rear of the defense, must compensate for the mistakes of others; football intelligence matters more at this position than any other on the defense. At five-eight, a hundred and eighty-eight pounds, the Bills safety Jim Leonhard, a nine-year veteran, is among the smallest and also the slowest starting defensive backs in the game. And yet, watching him on film, he appears to teleport to the ball. Leonhard’s name seems to enter any conversation about football intelligence; he knows every teammate’s responsibilities in every call, and understands the game as twenty-two intersecting vectors."
Each discipline has its own intelligence, its own rules, and its own metrics for success. In your field, there is a particular knowledge base you must master if you are to scale the heights of your given discipline.
Remember the genius you possess within and then sit in awe of those who possess it elsewhere.
As that genius guy Einstein once said: "Everyone is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid."