Is it normal to talk/think inside my head all the time, and be annoyed by it?

I always have this sort of mind voice in my head, that is supposedly me, that often narrates what I am doing or plans ahead of what I am going to do or tells its general thoughts. I have no idea if this is me, but it is annoying. I would like it to shut up and just think normal thoughts without any verbal mind voice speaking. I would often find me thinking thoughts faster than it could speak, and I would have to halt my thoughts until it caught up. Maybe it is useful, since it kinda finalizes my thoughts of things, but it's so annoying.

It gets surreal, and frustrating, when I realize that this is probably me all along that I am hating on, and that I basically find myself annoying. I could just try and be silent, but it just ends up speaking/thinking again regardless after a while. It gets more surreal to the point of Depersonalization, where I am unsure if it is actually me thinking, or if it is just a product of the brain as a way to communicate thoughts.

Do other people have this type of thinking, where you speak verbally inside your head what you are thinking? Or do you just think pure thoughts? Or maybe something completely different? I am interested, and would appreciate advice on how I could change the way I think, in a sense.

As a last note, I do not audibly hear it through my ears, so I am certain that it is not some kind of schizophrenia. I just hear it inside my head, as a form of thought, is all.