Muttering wreck

I've been talking to myself a lot lately. For me, it's usually a sign of anxiety or stress. I'm always kind of prone to it at the best of times, and I like it as a thinking out loud method sometimes. But it annoys me when it gets like this because I do it without realizing it, even when it's not appropriate. I don't mind doing it when I'm alone, but lately I find myself slipping out when there are people around, which I absolutely hate. I despise having to explain myself when somebody asks me, "What? What did you say?" in response to some weird fragment of thought that ended up getting verbalized under my breath. The compulsive muttering to myself tends to be worse when I'm more on edge, which I have been lately, so it's just been out of fucking control. I must sound like a wreck. No wonder people used to think it was a sign of mental health issues; with the nonsensical snippets sneaking out of me, I can't imagine what anybody overhearing thinks.