Happiness, true happiness, is an inner quality. It is a state of mind. If your mind is at peace, you are happy. If your mind is at peace, but you have nothing else, you can be happy. If you have everything the world can give - pleasure, possessions, power - but lack peace of mind, you can never be happy.
Dada VaswaniEmpathy is forgetting oneself in the joys and sorrows of another, so much so that you actually feel that the joy or sorrow experienced by another is your own joy and sorrow. Empathy involves complete identification with another.
Dada Vaswani