Seeing as i do not have the story to read, i can tell you how to find the answer.
Take a look at Gregory in the beginning. How does he feel? What is his outlook on the plot? At the end of the story, Does he feel any different? Has he learned any lessons? If so, how has he changed his feeling.. What has he learned and how does that change who he is?
Hope i could help, Have a goodnight.
