When metta meets the good fortune of others, mudita arises, joy in others. Mudita is an antidote to depression, to boredom, and it really connects you to yourself, to others, to the world around you. A beautiful introduction by Ratnavandana to the Brahma Viharas as an integrated set of practices flowing from metta - loving kindness.
From the talk Introduction to the Brahma Viharas (With Guided Meditation) given as part of the Brahma...