Discipline means to guide. Punishment means to persuade with unpleasant or painful consequences. So to guide kids without resorting to traditional forms of punishment, you simply offer guidance, while resisting the urge to punish. And you parent in such a way that your child WANTS to follow your guidance, so the part of him that wants to do the right thing wins out.
How to Be the Mom Your Strong-Willed Child Needs You to Be