Trying to go 50-50 as a sportsman and one of the "lads" is what led to his current situation. You can't do both in the modern game, even the best footballers dedicate 60 or 70 percent of their time,wellness and social life to football.
The days of Best, Maradonna, Romario are long gone, even a player like Ronaldinho tried that lifestyle and it cost him a lot in his career and that was in the mid to late 2000s, by the earlier 2010's he had become a washed up player.
The science and requirements of the game now is just too demanding, that's why it's no longer as fun as it used to be both for the players and the fans, nevertheless that's the profession Jack decided to take up and as a professional, I am not sure what it would take for him to realise that he's literally self-destructing in front of the entire world all because of some silly "lad" lifestyle that he just doesn't seem interested in shaking off.