Your Silent Master is your real self, your original self. It expresses itself through your thinking, through true ideas and thoughts in your mind. It is your eternal Selfhood that exists apart from your brain (which is a sensory processor only) and the personality traits imposed on you from your environment.
I cannot emphasize enough how important it is to live by the truth that you are one of a kind. As a child in training under my martial arts master, I would be in tears as I told him how my family was treating me – how they were pounding negative messages into my ears every day, telling me I was no good, I was bad luck, I was a tomboy, I was a curse, I was a disaster, I was never going to be happy, I could never be a martial artist and I was crazy to even think like that.