It’s an antiquated notion that in order to play football at a high level, you have to have a certain type of attitude or personality, a disposition that allows you to play the game in a way that leads to success. This is demonstrably false, the Pittsburgh Steelers themselves alone having a number of players on their roster who defy that stereotype.
From Alejandro Villanueva and David DeCastro to Vance McDonald and others on down the line—historically, two big examples being Heath Miller and Troy Polamalu—we know quite well that you can be a different person on and off the field.