Hi Worried,
I'm sorry to know that you're having such a bad time at the moment.Things seem to be going wrong.But everyone will have one of those periods,so you don't have to worry too much.It is important to learn to control your temper or you'll regret.Here are three useful tips:
First,talk to someone you trust about your feelings.This is a good way of reducing your anger without hurting others or yourself.Second,go outdoors and play team games with your friends because doing physical exercise is a good way to reduce anger.And third,remain positive about your future.Such a postive attitude towards life can do helpful.
I hope my suggestions will be of benefit to you.May you get rid of your trouble soon.
Yours,
Jamie