What is the main conflict in Brian's Winter by Gary Paulsen?

Mr. Paulsen writes this novel in which he pretends Brian is not rescued after fifty-four days lost in the woods with only a hatchet. Instead, Brian must face the winter alone. Brian discovers flint and makes arrowheads so he can kill larger prey, uses rabbit and moose skin to make himself warm clothing and even finds a way to make snowshoes so he will not sink in the snow while hunting. Brian's Winter is a "what if" scenario that takes a beloved character back to the woods and shows readers why he survives the woods in the first place.