Start with your protagonist at a moment of change - and this had better be a significant, life-changing change, rather than a decision to wear heels rather than flatties. Feed in a few general details to give us a grasp of normal life because then we will appreciate the changing incident more. This first plot point marks a change in and for the protagonist, indicates the direction the story is about to take, and hopefully engages the reader. The most difficult question to answer is the last one. How can we know if it strikes any sort of bell for the reader?
Once you have your protagonist marching in his new direction, he should run into conflict, both expected and unexpected. How he handles these is a learning curve for him and strengthens his character. As the climax of the story approaches the hero has to face his most difficult challenge of all. How he handles this will define the rest of his life - and sometimes if he has a life after this.
It is easy to forget the emotional side of this last confrontation when writing the action. Don't forget the effort it takes, the courage, strength and persistence to keep moving forward toward a goal. I suspect I have skipped over this point too lightly in my story of Matho, but I will fix that as I reach the last chapters in what will hopefully be my final edit.
Afterwards, your protagonist and mine should be a different person. The same, but more so, with added strength and knowing what he can do when pushed to the absolute limit.The next question is, what does he do then? Go back to obscurity? Hardly.