I somewhat do that, however it's when I'm having the actual conversation. I over think what I want to say in response to a conversation I'm in.
What I want to say needs to sound perfect before I say it out loud. Then I just spent too much time thinking about what to say. When I do come up with the perfect wording I miss the whole conversation completely considering a new topic arises. It's quite frustrating. I've found if I don't do this everything gets jumbled when I talk and I start to stutter or don't talk loud enough.
^is this considered "rumination"? I've always been curious as to why I do this and if it's common with other people.