I do
a lot of head talking, which is usually not a good thing

.
Sometimes what is going on in my head gets said out loud, not a good thing either, because it tends to be something in the line of "I wish I was dead", etc.
One time I was downstairs doing the wash and I didn't know my son was around. The head talk was really going on and I shouted it out loud "I don't care!!" My teenage son poked his head around the corner and said "You know mom, when you say I don't care like that, it is usually when you care the most." He was probably right, but I felt bad that he heard me talking to myself.
I have tried to keep the talking out loud to a minimum, but the head talk is killing me

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I think lots of people talk to themselves, they just wear those little "bluetooth" headphones in their ears so you don't look at them funny.
Take care everyone...