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Every one has the ability to control their anger but today people don't do so and they just claim that we can't control our anger, which in my point of view is false statement, every one can control anger but if they want to, so people should atleast try to control their anger.
There are different ways through which a person can control his anger; he can ignore the person, don't take his words seriously, he can just be quite and try to be calm and so on...
So we should try not to be angry on anyone and if someone is shouting at you then just ignore him and be calm, in this way that person will also learn to be calm.