Hello
I had to learn about anger management a while back, I was self destructive and got explosive, not knowing that my anger had to do with trigger events that had happened to me in the past...
Albert Ellis came up with REBT... Rational Emotive Behavior Therapy...
It helped me understand where my anger originated because of certain past events...
I encourage you to get some of the literature or audio videos that are listed in their site...
REBT '-' Albert Ellis Institute
Good luck... Be good to yourself!