Whats Freud superego ego id

So basically, these are Freud's understanding of the Psyche. The Id is the part of you that is violent, aggressive, childish, selfish, bossy, mean, careless, impulsive, etc. The Superego is the part of you concerned with authority, justice, following rules, obeying, doing what's "right". You know, the voice in your head, your conscience. Finally, the Ego is that part of you that mediates between the Id and the Superego, and tries to balance them out.