What incident marked the passing of the old Brian and the birth of a new one in hatchet?

In "Hatchet" by Gary Paulsen, the pivotal incident that marks the transition from the old Brian to the new one occurs when he faces a life-threatening situation after a moose attack. In this moment, he realizes the raw power of nature and his own vulnerability, which forces him to confront his fears and adapt for survival. This transformative experience leads him to develop resilience, resourcefulness, and a deeper understanding of himself and the wilderness. As a result, Brian emerges from the ordeal as a stronger and more self-reliant individual.