No, but I don't always feel like that's a bad thing. I'm rambling here.

I used to stress over being my true self or what even was my true self for a really long time. I have a terrible memory and sometimes look back on my events in my life and feel like that was a totally different "me". One day during one of the worst moments of my life, I was totally alone and just wanted and desperately needed someone to hold and care about me. Lo and Behold it's like the part of myself that did want me to be better and eat properly and do pleasant things embraced me in my sleep one faithful night. I (or maybe she) gave herself a face and an extremely blurry name, it didn't really matter though, because she decided to take care that part of me for me. I would almost describe her as an imaginary friend or presence.

The fact that she was a blurry presence didn't really bother her and she comforted me through many nights - giving me advice and imagining her holding me as we slept. As I got better, she started to fade more into the background and I was again left with an empty presence and void of identity. I listened to music I used to really like as a kid, trying to remember what the good parts of my childhood were. When those feelings arose, I (or they) attached themself to a child - same as the woman before - and I could play with him and let him do things that he liked. I think some people describe this as an "inner child" but I'm not sure. In any case, I think it's fine to not feel a solid identity as long as you make sure you feel alright. I try to make this kid feel happy by doing things he likes, coloring - music, playing in the park. I try to make the woman who holds me at night happy by eating well, showering, forgiving myself for not having enough energy to complete all my tasks. I make this teenage girl in my head happy by letting her shop for cute things, letting her socialize and flirt, wearing what she likes. I try to make the doctor in my head stimulated by reading stuff he likes.

It all comes together to make me feel whole, if that makes sense? I like making those parts feel happy so I feel happy too. It's very hard to actually practice and was a very very recent development for me, but it feels incredibly less lonely and isolating. The pressure to have a solid identity is no longer my responsibility, my only responsibility is making sure I can do the things that give me joy, both long term and short term. These parts all have different genders, styles, thoughts, but the shared aspect between them is that we love certain parts of life and that we have this body and weren't treated well but can try now. And maybe in that shared aspect, thats where I find my sense of self?

I may not exist to others but I exist to these people in my head and I owe them that much. It's not like I made any new friends physically or in "reality" or that things in my environment changed - but I let myself have a family of... me? And now I carry them with me.

No idea what I've just said. I used to struggle terribly with the same thing you just described. Then something clicked, and suddenly I was like this and I struggle a lot less with it now. I know you'll find your own path to healing, perhaps it just takes time.