It could be useful to integrate our past selves with the new and improved version that is closer to who we are.This means they there are elements of our personality that got us through challenges and therefore deserve to be integrated rather than scrapped. I don't disown my past but have instead tried to keep what has worked for me while I work on new facets.
Many of us found battling gender dysphoria far too difficult and some took their own lives. Christine Daniels comes to mind as someone who tried to transition and whose story ended in tragedy. There are many others.
Whatever helped get me this far is worth saving and that fortitude will continue to be helpful to me as I move into the latter part of my life.