When you reach a state of true peace within your heart, body and mind, you cease to have cause for being unfriendly/angry/impatient towards others and their way of being. And if they are showing you anger and impatience or if they are being unkind to you, you simply allow them to do so without reacting to their negativity. In this way eventually they will become peaceful too. Or else, if they are unwilling to let go of their negativity, they will soon tire of you and turn upon a more willing participant in their game of causing more unhappiness out of unhappiness, which is motivated by the unconscious fear of their Ego .