Since we don't really know the '18 to life goy story' well, it's difficult to say who the main character is. It could be Goy, if Goy is a person, but we have no way to be sure.
It might be a girl from a small town. She has a simple life but is full of big ideas. She could be the one the story focuses on, showing how she makes the most of her small - town upbringing while also dreaming of something bigger.
The main character is Chuck. When we see a title like 'the life of chuck story', it's a strong hint that the story is going to be about Chuck. He will be the focus, and all the events, emotions, and developments in the story will likely revolve around him. We might get to know his dreams, his fears, and his everyday life through the story.
Take Katniss Everdeen from 'The Hunger Games'. She lived in a post - apocalyptic world where each year, two tributes from each district had to participate in a deadly Hunger Games. Katniss volunteered to take her sister's place. In the arena, she used her skills in archery and survival to stay alive. She also formed an alliance with Peeta. Her defiance against the Capitol and her strength in the face of such a cruel system made her a symbol of hope for the oppressed people in the districts.