Look up mindfulness. It is a bunch of skills, not all meditating, that can help you collect your emotions when you are spiralling. If it is really bad, use the "dive reflex" method. Lots of sites if you google it. It acts like a "reset" button.
i stab things with big shiny knives...one time i stabbed through a gallon of water without thinking so i got into lots of trouble and my parents forced me to go see a psychiatrist
Kick the cat around the room
Take a sledge hammer and flatten out a 55 gallon drum.
forgiveness- of yourself mainly, and of others who have wronged you in some way. Also being grateful for what you have/ experienced/ lived