Didn't keep my first, middle, or last names. Not even initials. It wasn't some grand scheme, but the way the cards played out over the years. First name I picked up when I was 7. Middle name was when I was 9. I decided to change my last name the week before I went through the name change process because my dad and stepmom are mean people who hurt me very badly, and I wanted nothing to do with their legacy. I took my stepdad's last name because he's been more of a father to me these past three years than my biological dad.
Besides, I didn't know at the time that my stepsister had outed me to my dad and stepmom and they had made the choice to sever ties with me (without even telling me they had done so). In the end, it all worked out for the best.