If we allow ourselves to be overwhelmed by the weight of other sentient beings’ suffering, we lose our ability to help. Therefore, an important component of skillful compassion is to keep our peace, so that we can be of service.
At the scene of an accident, for example, we do not pull our hair and scream along with the victims, but do our best to offer effective succor. We do not crumble emotionally, because it is not helpful.
My Teacher used to say: “Help now; cry later.”