Spoiler alert: He survived by committing about 1,000 burglaries of the 100 cabins in the area.
Almost seems (too? as a consequence?) that he was lacking a type of curiosity, whether as an existing character trait, or something that developed from having to periodically use all his wiles to obtain the means of survival when surveilling the cabins.
I also just finished watching this fascinating story about a 54-old man who decided to live alone in the Alaska woods, for more than 27 years, building his own cabin. https://www.youtube.com/watch?v=YNXFJ1AMHrM