This is hard to write as I feel very embarrassed about it.

I used to be a bully in school/college until one of the people I picked on, stood up to me.

I have written about it before on here a few years ago and maybe I wasn’t as sorry as I am now.
I would love to go into schools or something and talk about what I did and what happened to me in order to get people to think more about what they’re doing.