"Ironically, what blocks your view of your mind's true nature - your buddha mind - is also your own mind, the part of your mind that is always busy, constantly involved in a steady stream of thoughts, emotions and concepts. This busy mind is who you think you are.
You identify yourself with the contents of this busy mind - your thoughts, emotions, ideas - and end up thinking that all of this stuff is "me" and "how I am"."
Rebel Buddha - p. 11