A knowledge of the interaction of your conscious and subconscious minds will enable you to transform your whole life. In order to change external conditions and circumstances by working with conditions and circumstances. To remove discord, confusion, lack, and limitation, you must remove the cause, and the cause is the way you are using your conscious mind. In other words, the way you are thinking and picturing in your mind.
~ Joseph Murphy, The Power of Your Subconscious Mind (1963)