Of course this means he ultimately screws up big time, so along with the further external conflict of trying to undo his mistake comes the internal progression of realising what a stupid jerk he's been and finally getting past that stage to become a mature adult.

In one version of my yet to be properly storyboarded novel, the young protagonist is given a choice by the old mentor: seek revenge against the tribe that raided his village and perpetuate a generations-long cycle of violence, or stay and help the survivors rebuild. The protagonist chooses the first option, because he's preoccupied with proving himself to be a strong and brave Man. Ironically failing his first test of manhood.