1) When you think, do you hear your own voice in your head?
2) Why is it there?
3) Is it your thoughts or is it just a translation of the thoughts?
4) Have you actively tried to think in some other form? (example: think in images)
5) Do you think the voice limits your thinking efficiency?
6) What would the advantages be if you could think in some other way?
7) Are there research about this? Give me some literature or links about this.