The Colts were not the most mentally strong team last year. There have been several players that have come out and said that they struggled mentally last season, and it affected their play. They know that they have to do better.
Anthony Castonzo talked about it and shared some insight as to what he was going through.
Interesting: Anthony Castonzo says one of the keys to his mostly-successful 2017 was “getting out of my own head.” Admitted to overthinking it in years past, getting down on himself and having it spiral.
— Zak Keefer (@zkeefer) April 17, 2018
Castonzo also talked about how Andrew Luck was mentally while away from the team.