"Compassion is not something to keep locked inside yourself. It is something to express in action. This compassion must persist beyond the thought, “If only their suffering would come to an end.” If we focus too long on wishing for something that we never pursue and that never happens, we run the risk of falling into a depression ourselves. When compassion arises, it is the time to act."
H. Hthe 17th Gyalwang Karmapa.