What helps with a tantrum?

I listened to the 6 Minute Podcast today and learned that there are two good ways to deal with anger. Firstly, the breathing technique "psychological sigh" (inhale twice through the nose and slowly exhale through the mouth). And on the other hand, write down the situation and then crumple up the piece of paper (never keep it).

If you are interested in more details, listen for yourself and follow the link.