An excerpt from The Mind: Its Projections and Multiple Facets by Yogi Bhajan (page 49)
The combined strength of your thoughts and your subconscious catches you. This combination, when subconscious links with the play of the mind, is the origin of mental intrigues and most of your self-defeating patterns. You need a habit to relate to your mind. Sit with your mind and review it, polish it, and direct it.