Answer:
He gets himself into trouble when he falls into a spring while traveling alone.
Explanation:
The first excerpt that indicates an attitude that contributes to the main character's death is, "Fifty degrees below zero was to him just precisely fifty degrees below zero. That there should be anything more to it than that was a thought that had never entered his head." The fact that this character does not find fifty degrees below zero to be dangerous - that the possibility of it never even crossed his mind - indicates that he was not prepared for this, and likely does not have the survival skills or mindset necessary to survive.
The second excerpt regarding the attitude that leads to this man's death is, "But the temperature did not matter." It is one thing not to be prepared for the intense cold, but considering humans can't survive below a certain temperature, the temperature does, in fact, matter. For him not to realize this is foolish, and makes his chances at survival slim.
Fever Pitch is an autobiography, so it is about the writer.
The book is about the author's relationship with football, and about football matches that the author watched. So the book is technically about football.