Were you the quiet kid in school?

Being quite while learning makes it easier to learn.

In a boarding school, being a loner is not an option.

it depended on what company I was with, but I'll admit I was generally a loud mouth fool
I can see now how much a jerk I was back then

No I wasn't. My teachers nicknamed me, "motor mouth."

Yeah I was, until I moved to a different town and high school for my final two years and suddenly went from wallflower to hanging out with the popular kids. It was awesome at the time, like I’d finally got to feel what it was like to be part of the gang.

Of course now I know being popular isn’t anything to be proud of, but those two years at least gave me the nerve to leap into adult life with proper self confidence. I’m thankful for that.

Yes, until I turned 11, then boom!

Primary School (5 - 11), yes. Secondary School (11 - 18) I became much more outgoing.

Loud up until high school, where I was pretty quiet for the most part. Then I got to university and changed back to loud.