Melody, anyone who didn't have the loving mother who knew the real you feels like you describe until we begin to re-parent the self and replace the mother relationship with a better one... we can then pick up the pieces and start living again.
I agree with
@Solara that though we define ourselves, that's not much good to us until we see who we think we are reflected in the eyes of someone else who cares.
How sure am I that I am "me" if I don't see anyone for the rest of my life?
I would know myself as well as I would know my facial expression without a mirror. I could not practice raising one eyebrow without a mirror or a friend to tell me about it. Who would know how to make me laugh? How often would I laugh on a deserted island? Who would teach me the art of loving myself by seeing myself through his eyes? I never had that reflection growing up. I believed I could find it, and I set out searching.
Sure, there were some scraped knees, but I was lucky and found someone to love, who loves me. :) He is how I learned that nobody truly sees you clearly until they see you through the eyes of love. Then, they see you as you truly are, at your best, and they reflect it back to you often, so that you actually become your best self. It is art, reflecting life, reflecting art. It's wonderful when its working right.
Like you, I didn't have a great mirror at all with my mother (or father). So I was pretty sure I was as ugly and useless as they seemed to see me. Funny thing: They were telling me who THEY were, not who I was. They actually don't see me or know me. The "me" they see is nothing more than a faint resemblance of me, really a figment of their twisted imagination.
But these people
@Melody coates who say these things are not reflecting well to you; they are telling you that you are all the things they hate about themselves. They need to put it on you.
You'll know you have a "mirror" friend worth keeping around when it shines back BOTH love/kindness AND an accurate reflection of the sum total of WHO YOU TRULY ARE, and appreciates it enough to BE the SUM TOTAL of WHO THEY TRULY ARE back with respect and No strings attached. Take it or leave it. No pressure.
You'll slowly collect better mirrors if you want to. Thanks for sharing your process. You have good people and good advice here. Hugs.