Cultivate Compassion
Some people think that cultivating compassion is good for others but not necessarily for themselves, but this is wrong. You are the one who benefits most directly since compassion immediately instills in you a sense of calm (nowadays medical researchers have shown in scientific studies that a calm mind is essential for good health), inner strength, and a deep confidence and satisfaction, whereas it is not certain that the object of your feeling of compassion will benefit. Love and compassion open our own inner life, reducing stress, distrust, and loneliness.
Dalai Lama, in 'How to See Yourself As You Really Are'