whenever you're angry, don't let it out and just look at the good side if there is one. If there isn't, think of something funny or something that makes you feel calm. If that doesn't work, go to...
This is one of the symptoms of Borderline Personality Disorder. You should see a therapist to get some help if you really want to stop this self-destructive behavior.
It's not recommended to take steroids, but that aside washing regurarly, eating as little junk food as possible and also trying different skin cream products works with most acne.
go to a psychiatrist
ALSO:
Or consult a psychiatric nurse-practitioner.
And reduce stress. Allow more downtime.
Sometimes prescription medications used very carefully can help.
Many people believe you should breathe calmly and if it is a person you believe to be more important than you you should imagine that you are just as important as them.