By entering into a sleepy, drowsy state, effort is reduced to a minimum. The conscious mind is submerged to a great extent in a sleepy state……In this state, the negative thoughts, which tend to neutralise your desire and so prevent acceptance by your subconscious mind, are no longer present.”
The above is quoted from Dr Joseph Murphy!s book “The Power Of Your Subconscious Mind”.
Though it refers to the subconscious mind, it is also about hypnosis (look at the words “sleepy” and “drowsy”).