Using people in writing

For my personal letter, my persona was as a adolescent student. In my analytical review I took on the persona as an scholarly reviewer. The difference was drastic. I wrote my personal letter revealing a story from when I was young. Therefore, I had to use a young persona. I was trying to convince my reader why I was write so I had to use mostly logos and pathos. On the contrary, I had to be a sophisticated adult when I wrote my analytical review in order to convince my readers that they should take my suggestion. I had to create ethos which in this case was a analytical reviewer so I had to become a scholar.