How would you describe the inside of your mind?

I’m really curious about this, but think it’s a hard thing to try to articulate to others…

I guess I should try to explain my own if I’m asking… Hmm.
I’d say it’s this undefined space—maybe endless, maybe absolutely tiny, I don’t know, probably somewhere in between, and all that’s relative anyway.—And there are all these books, of sorts, as if on a shelf, and that’s my memory. Where as long as I can remember something, find a page to a book, a title, a first sentence, I can usually grab onto the rest of it and complete the concept, idea, or whatever. I can take a while to find and open what I need, but I can have many many “books” open at the same time.

And I call them books but they’re not all written in words or are held in bound-together pages. Most of them are a mix of many different things, only a few are pure anything. Some aren’t books, and I don’t have a better word for those but flavor, but they’re more complex and more simple than that at the same time… they’re just there?
Thoughts come into my head in all sorts of forms—but if it’s not words, images, movements,I don’t know how to translate it, and get stuck tripping over trying to express it.

When I imagine my mind, I picture it inside my head, but in actuality it feels more like it’s in my core that is, stomach-ish area, and thoughts and feelings and emotion come rippling out of that into the rest of my body, and when I’m open they come to the surface of my skin, and my mind feels faster, free-er, and clearer.

I don’t think I’m making much sense… and that’s not really my mind there even. I know what the inside of my mind is like, but I don’t know how to explain it so well. And see, this is why I’m asking. Can you explain your mind? Have someone else understand it, or kind of get a vague sense of it?

Are all our minds more or less similar, or are they all these vastly different worlds?