Your mind is the most amazing and sophisticated biological computer on earth. It processes up to 200 million bits of information every second and it has a seemingly unlimited capacity to store data (memories). The conscious part of your brain, on the other hand, is only capable of processing about 60 bits of information per second, depending upon the task. The rest of the information is processed and filtered by the unconscious mind.
One way to look at the relationship between the conscious mind and the unconscious mind would be to compare it to the relationship between you and your computer. Imagine the computer is the body, you, as the computer operator, are the conscious portion of the mind and the operating system is the unconscious portion of your mind.