Blood harvesting in dreams symbolizes a desire for power and control. It represents the act of taking vital energy or life force from others for personal gain. The dream may indicate a subconscious need to manipulate or exploit others to achieve one's goals. Alternatively, blood harvesting could reflect feelings of guilt or remorse for past actions in which one has taken advantage of others. This dream urges self-reflection and the examination of one's moral compass to ensure ethical behavior in waking life.