You will change in some ways, yes.
But your basic personality will not change, your likes and dislikes won't change.
Things that changed for me are that I'm more laid back and far less anxious, more confidence, and want to get out and do more rather than hide at home. I find it easier to make friends and talk to people.
People I liked pre-T I still like. People I didn't like pre-T I still dislike.
Jay