I read the following small thought on Shabbat. R. Zalman Sorotzkin pointed out that when Bamidbar 31:14-15 repeat the name Moshe, it hints to the fact that Moshe while angry, did not immediately rebuke the army for taking from the spoils of war. The lesson he draws is that one who is angry should wait and allow the anger to pass before speaking. Its an interesting lesson that is simple yet needs constant reinforcement. Of course, the first challenge is to be able to allow anger to dissipate, which in itself is a character trait that is difficult to overcome. Only after we are able to be quick to let go anger, will we be able to confront the subject of the anger in a meaningful manner.