I was also going to suggest meditating. It's a great way of attaining more calm mind.
Basically, it's true that anger is of no use. In fact, it practically always makes things worse. However, contrary to what it would seem - it is very essential.
Anger is a way to deal with the problem you're having. If you don't deal with it (if you don't get angry, for example), the stress condition won't be able to wear off. So, if you control your anger to the point that you choose to ignore the whole situation and just walk away in angry state of mind, you need to let it out somehow afterwards. Perhaps by meditation - thinking about why you got mad and if there really was any need to, how you got through it and become content with the situation. In other words, so that the whole situation doesn't make you angry at all, that you see it was totally useless for you to get angry in the first place. If you don't deal with it, you won't be able to get through it. Well, time heals wounds, but it will take quite a while and that kind of conflicts might pile up in longer period of time.
That is why I have started meditating. In army I was put up with enough anger to get someone into hospital in the most optimistic case. But luckily, I was able to control myself always without harming anyone, or even showing my anger. But as I didn't get to express my feelings or let the steam out in any way, the stressful situation stayed. And over time stress causes physical symptoms.
So, the moral of the story: remain calm, don't hurt anyone, but nonetheless: deal with the situation! In one way or other.
Basically, it's true that anger is of no use. In fact, it practically always makes things worse. However, contrary to what it would seem - it is very essential.
Anger is a way to deal with the problem you're having. If you don't deal with it (if you don't get angry, for example), the stress condition won't be able to wear off. So, if you control your anger to the point that you choose to ignore the whole situation and just walk away in angry state of mind, you need to let it out somehow afterwards. Perhaps by meditation - thinking about why you got mad and if there really was any need to, how you got through it and become content with the situation. In other words, so that the whole situation doesn't make you angry at all, that you see it was totally useless for you to get angry in the first place. If you don't deal with it, you won't be able to get through it. Well, time heals wounds, but it will take quite a while and that kind of conflicts might pile up in longer period of time.
That is why I have started meditating. In army I was put up with enough anger to get someone into hospital in the most optimistic case. But luckily, I was able to control myself always without harming anyone, or even showing my anger. But as I didn't get to express my feelings or let the steam out in any way, the stressful situation stayed. And over time stress causes physical symptoms.
So, the moral of the story: remain calm, don't hurt anyone, but nonetheless: deal with the situation! In one way or other.