"There is something very important about talking to yourself out loud. You get to listen. When you are inside your head and the monkey mind is chattering away, there is little to no listening unless you are very practiced at meditation. Most of us aren't.
There is another example that fits. When we engage another for advice, counseling or therapy the real insights come from listening to the words that come out of us, not necessarily the reflection of the other listener. We have a tremendous capacity to process and transform accordingly, and although it's nice to have someone to talk to it isn't always necessary."
Excellent advice I have incorporated into my personal work. Zen calls himself a "Possibiities Coagulator".
Zen's website: http://bethedream.com