Complex sentence: It is said that to awaken consciousness one must understand consciousness asleep, which implies that one must begin to understand every impulse, action, thought and movement one makes, a feat that is said to be accomplished through meditation and self-observation.
Split into simpler sentences: It is said that to awaken consciousness one must understand that his or her consciousness is asleep. This implies that one must begin to understand every impulse, action, thought and movement one makes, a feat that is said to be accomplished through the mental discipline of meditation and self-observation.