Whenever we try to discipline our son, it always escalates into a very bad situation. He recently started driving to high school and he has had a few tardies. He had a tardy a week ago, his second. We warned him to make adjustments or if he gets another he loses the car for a week. That happened today and tonight. We told him he would lose the car. It followed with 20 minutes of pleading, arguing. When that doesn't work, that escalates to him calling me stupid, cussing. That is the point when i lose my cool and get physical and it ends up bad. How do i reset the situation so it doesn't escalate and he treats me, his father respectfully? I am afraid of doing permanent damage to our relationship every I blow up.