To hit another person in a dream is symbolic of anger directed towards others.
If you hit yourself in a dream it is symbolic of regret, Jer. 31:19
[1]Aggression. Energy shift and exchange. Desperate need for touch and an attempt at greater closeness. Immediacy and simplicity of method.
[2]1. Repressed anger seeking outlet in inappropriate ways.
2. Intensifying conflict, with likely irreversible consequences.
[3](See Also: Beating) 210
[4]