I've struggled with anger a lot and have a few things to say.... You may find them helpful; then again you may not.
Accept your anger. I think fighting it puts you at war with yourself, and both sides fight, fight, and fight. Accept the source of your anger as legitimate. That's right, it's legitimate that you're angry. The source of my anger comes from my immediate caregivers (mother, family, teachers (I was six when the neighbor abused me)) not seeing the obvious distress I was in, not digging deeper, not being savvy enough that something was seriously wrong. There was a subconscious sense of abandonment and betrayal. Sometimes, people can be angry at their abuser but the bulk of the anger is reserved for those that stood by and did nothing. I'm not saying this is your case, only that it's worth thinking about.
Focus on small, attainable goals. Too often we try to slay the beast. We would use a nuke if we had one. But real progress, I believe, can only be had with small, baby steps.
Hug yourself, be the caregiver you missed out on having. During a vision quest in a desert wilderness (South Sierra Wilderness, Calif), I remembered a time my shrink asked me to imagine my older self on the school bus with by younger self. (My abuser was an older boy, who rode the bus too, and terrorized me everyday to and from school for three years.) So my older self got on the bus, sat down, and hugged my young self. See, the anger comes from fear. Some believe that anger and fear are two sides of the same coin. By telling my young self that he was being protected now, the fear could subside and take the anger with it. So, back in the desert, I tried to actually hug myself. Why not? There wasn't another soul around for miles. I cried like I've only rarely cried in my life. Good stuff!
Hope that helps.