Anger is a difficult thing to over come especially at you age. Understanding how your hormones work can play a big part in reducing anger. Some ways you can try to cope with anger are;
~ Ask Google (lol I do it for everything!) Google is a great tool to finding anything you need, and often a variety of methods to try for yourself and explore on your own.
~ Run the Mile
~ Stay away from large amounts of salt (it raises your blood pressure significantly!)
~ Drink a lot of water
~ Workout, exercise, or tire yourself, Do something Physically demanding that is productive and not Harmful amounts just enough to wear you out and help you release some of that energy building up.
~ STRETCH! extend those limbs as far as you can get them loosening your muscles, tendons, and joints can release a lot of stress, tension, anxiety and anger.
~ In extreme cases and in emergencies, Countdown from 10.
~ Tell yourself its temporary and this will pass, this situation is not going to be permanent and if you stay positive you may be able to positively effect its outcome as well. Act as happy as you can that this man is no longer in your home and help create that same atmosphere for mom. :)
I hope these help you,
@Golden Boy
You can always drop a line here too if your feeling you need to get something off your chest, here is a pretty good place to get your anger down in writing and other people who care can give you a perspective not quite like your own.