I think this movie deals with the notion MYTHS & HEROES because the main character is braver than ever. He breaks away from his former life to face the Nature. He is searching for himself, it's a kind of a quest in which he doesn't want to feel strong, he wants to be strong! He decides to face the danger of the Nature by living with nothing else than by his own means. He surely doesn't feed himself correctly but it's nothing compared the hurdles he has to overcome : in the trailer, we can see that he is beaten by someone else.
Besides, this film refers to the notion IDEA OF PROGRESS, but in an original way. Indeed, this film is a criticism of consumer society. The main character - the heroe - takes the decision to live with nothing in an opulence world. Therefore, he cuts his credit cards and burn his money before going towards Alaska.