Dream of seeing or using mace indicates your search for objectivity over subjectivity. You do not let your emotions rule over your actions.
Dream dictionary: mace dream meanings
When you dream of seeing or using the mace in a dream, then such dream indicates your ability to stay focused. You are the person who is able to control his feelings and emotions.
(See Scepter)
…(Authority | Mace) A scepter in a dream means good conduct, emulating the leading example of the Prophet Muhammad, upon whom be peace, rising to a high ranking position, or becoming an authority. A scepter in a dream also could represent a wild son, a crooked man, or a hypocrite. Playing with a scepter in dream means using the help of such a person and assisting him to lay hands on his rivals. The crosier represents the human heart and the staff represents man’s tongue. Thus, playing with a scepter in a dream means playing at will. Whatever may affect a scepter in a dream can be interpreted as affecting one’s son or his tongue. If one sees himself hitting a small ball with a septer, or playing with a ball in his dream, it represents a dispute with his wife, or a fight with a hypocritical person. A…