Anger has been one of my "things to overcome" in this lifetime. Several things have helped me in dealing with it: Eckhart Tolle's book A New Earth is teaching me to detach and allow the anger to pass through me instead of sticking. He mentions watching two ducks disputing territory. When it is over, they swim their separate ways and then beat their wings into the air to release the pent-up energy. This natural technique is not taught to humans. We are taught very little about handling emotions and I am so thankful for websites such as Steve and Erin Pavlina's.
For releasing pent-up anger, I HIGHLY recommend the CD Dynamic Active Meditation, by Deuter/Osho, available at Amazon.com. It takes 60 minutes. Do it alone. You will be releasing anger, crying, dancing and shaking. It's not scary. In fact, you will feel as if you've had an internal shower. (Several days later you may feel the overwhelming need for a long nap. Don't fight it. Take the healing nap. Something from the music and motion is balancing.)The CD directions state that at one point in the music you'll be told to stop & freeze. I choose, instead, to lie down with a blanket & pillow and usually fall into a deep sleep. The CD ends with beautiful, uplifting music which you move freely to for about 15 minutes. If you sleep through this part just start the CD again on the last track. Don't skip this last section. Amazon.com: Dynamic Active Meditation: Deuter: Music
Two other active meditations I recommend are Kundalini and Nataraj, also by Deuter/Osho. Nataraj brings me peace and joy while Kundalini does the same - in a different way. Read their descriptions at Amazon.com.
These meditations were introduced to me by friends who traveled to Osho's ashram in Puna, India. He is a physician and she is a professor - both interested in health, learning and balance.
Doing these meditations will not fix your situation, only help you handle it.