People who knew you at fourteen don’t get the final vote on who you are at twenty.

Old friends and family keep a version of you on file from whenever they were paying closest attention. They will bring it up, tease you with it, occasionally correct you with it, and none of that makes it current. Fourteen-year-old you was real and is also several rewrites out of date. The people around you now are working from much better information.

Do not argue the point, since arguing keeps the old version in the room. Just keep being the current one in front of them. Time updates people more reliably than any explanation does.