I do, but don't think it's strange, just natural. My mother used to talk her way into doing things, and I've picked it up as well. Encouraging myself, and talking out the steps of a problem is what we do. I think it's a natural "vent" that our brains have. I'm sure everyone does this to a degree, verbally, or not.
I don't do the "crazy" type, where I think I'm actually talking to people. Don't mean to offend by that. I've been asleep and woken up, to start a conversation I've never remembered. Has happened multiple times, and I'm a little bit scared as I do this when I worry a lot, especially if I've got a secret. Would be a real awkward if I let some stuff out of my mouth, I'm almost possitive I've done this...
[edit]Exactly Livebird!
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Still grateful.
"...do you really think you're in control...?"
Diagnosis: uncertain.