Yes. I agree with you Deep breathing has the potential to douse the fire of anger. Deep breathing which includes deep inhalation and exhalation takes you to a state of Peace and tranquility leading to a relaxed mind. There are methods  which help you fight the ill effects of anger.

http://www.apa.org/helpcenter/controlling-anger.aspx

If we know the situation in advance that we are going to be angry, we can practice deep breathing which will calm down our mind. That alone is not sufficient. We have to decide that we will not be angry. Deep breathing relaxes our rapid thought waves and strengthens us to make a decision to abstain from anger.

Deep breathing involves Inhalation, holding the breath and exhalation. This forms a cycle. Such cycles are to be repeated 10 to  15cycles. As you practice more breath retention  time and exhalation time are to be increased depending on your capacity. If this process is continued the mind attains a state of calm and tranquil state. It strengthens your emotional control. That is anger too will be controlled. And this invariably douses your anger without any upsets.

That is one of my favorite ways of keeping my anger in control, the other being get away from the site of ugly scene or drinking a glass of water besides counting in reverse from 100 to... until I feel normal. 

True the method you are using are capable of controlling your anger and bring you back in to normal state. And I'm glad to inform you that I too follow the method of  counting the numbers in reverse order. It contributes in a big way in nullifying your anger.

Listening favourite playlists many a times do away anger. It is true anger not only kills self but also it disturbs near and dear ones around you.

Any kind of diversion will be beneficial to douse the anger of fire. Whatever method you apply it's of utmost importance to annul the ferocity of. anger.

Anger can kill you within and hurt your loved ones too. You can control your anger with deep breathing exercise. This is a way to live a healthy and peaceful life.

According to many psychological reports anger is one of the main reasons for carrying out a crime especially domestic violence which stems solely out of anger. Controlling anger and destressing should start from early ages so that it gets inculcated in us .Deep breathing is no doubt very beneficial to us in more ways than one ! But for anger management it is not enough !

Deep breathing can be of help to some extent. The ill effects of anger are many. Child beating is one of them. A recent news  item which accounted a case of child beating by a school teacher. The poor student succumbed to the injuries . His spinal card was broken.

One can see more and more school teachers taking to physical violence these days and they vent out all their frustrations against students.It may be because they have personal worries or they are simply not mature enough to handle their emotions especially anger. There is a slo a false sense of pride which makes them angry if the student is independent in his or her thinking and openly defies them !