Is it normal that i think this?

It's weird to think of ourselves as temporal beings, but I viciously disagree with the idea that a person's mind is concrete. Our language frames the issue quite nicely - our pronouns hide the fact that we have hardly a clue what "I" or "you" really means.

"I" am not my self in the present; "I" is defined by the day "I" am born until the day "I" am dead. We just happen to be at one point on that trajectory.

So yeah, I think it's normal. Makes sense to me.

I felt this way when I looked in the mirror. I was brushing my teeth 3 at night, looked in the mirror, stared at my eyes. I couldn't look away even though I ay natatakot, cause she looked like a bitch. I call her Rooomein. Back to bed!! Run along! Let's go! Come on!

Ya defiantly!

I think that's normal. Are you thinking you're not the same in a biology sort of way? We're always moving and changing, but usually people don't look at the change in a 30 second time period; it is a very small amount of change in comparison to a few days even.

Like MPD?
If not I might know what you mean and I think thats normal especially if your young. Your just trying to figure yourself out.
If you name these different personalities and can't remember whose who, then go to a doctor. :)