Lucid dreaming is being aware of the fact that you are dreaming. This awareness can range from very faint recognition of the fact (which is often too brief and nebulous to be considered truly lucid) to something as momentous as a broadening of awareness beyond what has ever been experienced even in waking life. What a dreamer does with lucidity reflects personal tendencies and levels of skill attained usually through experience and practice. Although a lucid dreamer can influence the dream's structure, characters, course, etc., it is not a given that a lucid dream is about what the dreamer wants it to be about. Seasoned lucid dreamers who are more often lucid than not will continue to encounter psychological and developmental challenges in the dreamscape. The agreeable and the distressing, the easy and difficult, beautiful and horrifying, are all occasioned much as they are in regular dreaming. But whereas a regular dream is filled with the convoluted subtleties of the subconscious mind enumerating its issues before a largely unconscious dreamer, a lucid dreamer has the opportunity to consciously explore at any level.
Here are some videos on topic.
FULLSCREEN THEM
Drift from mustardcuffins on Vimeo.
WANDERING MINDLESS from Larry Carlson on Vimeo.