I don't have DID but I certainly experience some kind of fragmentation. For me, there is no such thing as "we" (I generally don't have such a construct in my life at all). I have different states or parts that I know are me but feel strangers to each others. When I'm one of the parts then later I know I was but I don't feel like it would be me (heck, what feeling "me" really feels?). Also, when I look into the mirror then I factually know that this person there is me but I don't feel it. I often observe myself from outside and I'm wondering who is this person at all.

I have often have the feeling of mosaic where there are borders between different mosaic pieces that cannot be crossed and each piece is very different so that when I'm in one piece of that mosaic all other pieces feel nonfamiliar. I guess this cannot be spotted by other people from outside but this has been my internal feeling about myself.