One of the realizations that Brian makes in understanding how feeling sorry for himself was not going to help him was his embrace of "tough hope." This philosophy stressed that he was not going to let the woods mock him again. He had gained strength and this fortitude was either going to see him through the experience in the wilderness of die trying. Brian refused to feel sorry for himself from this point.
Feeling sorry for himself, thinking of self harm, and bemoaning his condition were realities that were not going to be a part of his newly found spirit of "tough love." From this point, Brian starts to experience new adaptations to his surroundings. He starts to invest himself in the idea that he will survive through this. Brian realizes that he has the capacity to be his own agent of change through survival in the wild. This becomes one of the major events that takes place after Brian realized that feeling sorry for himself was not going to help him. Brian becomes mentally stronger with the emergence of his "tough hope" for it convinces him that he is either going to survive or die trying.