How did you get your "common name," or the name you go by in day-to-day life?
Some people (like me) go by their legal name. Some people go by a diminutive of their legal name, like Katie instead of Katherine or Tom instead of Thomas. Some people go by their middle name, and some people go by a name completely unrelated to their given name(s).
So I'm curious how you decided what name to go by? My family always called me by my diminutive name until I got to kindergarten and decided I liked my full name better. Some of my family continued to call me by my diminutive name until my cousin married someone with the same name and we needed a way to distinguish us.