crackerjack, I'm really glad you enjoy the thread! And thank you for the reply. Yup, I have read that alters are ego states but ones that are dissociative. However, that leads me to ask the question of what the difference between alters with no amnesia (DDNOS, I guess) and regular ego states is? Basically, how can you tell apart regular ego states from alters with no amnesia?
TeddyBear the helper, thank you. That helps paint a clearer picture. I think (unless I am heavily confused) I can relate to the idea of both feeling like a singleton and the opposite of that, that you wrote about. So it pretty much all rings true for me, more or less.
TheGangsAllHere, thanks for the reply. I'll definitely read the thread you linked

If I repeat myself, I don't mean to, but I think I found a slightly better way to describe how I experience some of my ego states:
My problem is that I can't always tell which ego state is the real me (because I have no self, or it can fluctuate) and that became apparent once the one I thought was the real me completely vanished a little more than a week ago.
Then she came back after a little while but it was difficult to keep her present because it felt like she was being pushed away like she was about to drift to the side and disappear again (depersonalization?). Then eventually she did. And right now, I don't know if I am partly her or someone else (we could be the same person and maybe I'm just confused). But I do feel like only
one person right now and like I am "myself" but not like the "myself" I change into with the ego states. Right now I am also confused if they genuinely even feel like separate people to begin with (even though I have felt that way before) because like I said, I feel like a whole person right now.
When I felt like the person I had lost, it felt like I remembered a part of my life that I had forgotten (but they were feelings, attitudes, thoughts, moods -- not memories) like "oh, THAT'S what it feels like to live life like that person -- I remember now!". It's kind of like if you have been close to a someone and then lose touch with them but remember that you used to know them but not how it felt to be with them or what they were like as a person, and then you hang out again and it all comes back to you. I also didn't want to "disappear" again when I was that person because I felt like I would then lose control over my life almost like someone else would be living it for me (and had been living it for me/her while she had been gone) and making decisions I didn't necessarily agree with. But I'm not as sure about the second part being true because it feels so irrelevant now that I'm thinking that I might have just made it up...
Does that sound like regular (non-dissociative) ego states? Maybe something that could occur in BPD, if anyone knows?