Caleb Williams could learn this critical lesson in longevity from Joe Flacco

At opposite ends of their careers, Williams and Flacco show that talent and ability starts an NFL career, but discipline and patience sustains it.

Chicago Bears quarterback Caleb Williams | Geoff Burke-Imagn ImagesIn the NFL, the average player's career is just over three years. Half of all players that enter the league are gone by their third season, and only around 33% make it past their rookie contract.

In a league where the average career is over in the blink of an eye, Chicago Bears quarterback Caleb Williams entered the NFL with the weight of a franchise on his shoulders. Only a handful of players have entered the league with a Heisman Trophy in their bag, and even fewer go on to become…