I have a temper too, and like Desertsong, I had to quit because I was flying into rages at my bf and kids when I drank. it got to the point that my bf started being afraid of me and my reactions.
I agree with the others - try not to be so hard on yourself. Not many parents would take the loss of such an expensive item gracefully. And look on the bright side - you worked out most of the rage away from your daughter and her friend's family. So it could have been much worse.
I am in therapy to help me with anxiety, PTSD, and anger issues. It does help me. A lot of alcoholics have other issues as well, including problems with anger. If you see a therapist that specializes in addiction, you may get the help you need.