Anyone can become angry – that is easy, but to be angry with the right person at the right time, and for the right purpose and in the right way – that is not within everyone’s power and that is not easy

Aristotle (Ancient Greek Philosopher, Scientist and Physician, 384 BC-322 BC)

Another great quote –

Holding onto anger is like grasping a hot coal with the intent of throwing it at someone else;  You are the one who gets burned