I would like the letter to talk about how I changed my life since being incarcer

I would like the letter to talk about how I changed my life since being incarcerated in 2009. I can’t change my past but can change my future and did. How I haven’t been in trouble since, worked several jobs and recently obtained my CDL in 2021. I was young and didn’t understand life but now that I’m older I have made better choices.
You can add other things that sound good