I think it's normal to practice what you're going to say over a few times, but it's really annoying that it's not the same when it comes to saying it out loud, and that feels frustrating
When i have things repeating in my head it's not over and over I don't think, it can be frustrating when it pops up though. But when i paid more attention to what they were trying to say and what they meant, it felt like actually a good shorthand for understanding what i was feeling. sometimes it is a bit random though. I'm not sure at the moment whether it's more present because I've been thinking about it a lot, or it's not any different. Sometimes I like to say words out loud that are silly and I like mispronouncing them, though sometimes I'm not actually thinking about it before i say it. But I don't feel like that's any different to what everyone else does.
The times it bothers me are when i'm distressed and it goes over and over and then I feel like I have to listen or talk myself ot of it. But it's not all the time, it doesn't happen very often. Sometimes a lot when I want to sleep, but I listen to other people talking a lot, and then it doesn't feel like I have to listen to my own thoughts, I think a lot of people do that too. Sometimes it's just quiet and I like being in the quiet though. Some places feel very noisy though, not necessarily outside noise. Some places are hard to feel still. I think that's normal.
The more I write about this, the more I think about earlier things, and I look at them differently. I don't know if that's helpful, it feels a bit sad.