Happiness and sorrow both have an effect on the heart. When you are happy, even that euphoria has to be stemmed at : some point. If there is sorrow, then even that has to be restrained at some point. Do you want to keep suffering your sorrow? Nobody wants to be unhappy, yet you remain sorrowful. Why don't you pull yourself together? It is only by controlling your mind that these emotions can be properly handled, for the feeling of sorrow is born in the mind. Happiness and unhappiness are not outside you, they are the terms used for the state of your mind. Happiness or unhappiness is not in living or dying or in wealth or poverty, but in the mind of a human being.