When we develop the Brahma Viharas, we also develop many beautiful qualities of heart named the Paramis, such as Generosity, Harmlessness and Renunciation.
Taking the most wisdom to access, the Equanimity Brahma Vihara practice gets is strength from a brave willingness to intimately see all truths. If we suspend out preferences for health and happiness, and away from pain and sorrow, we can bring our loving hearts in direct contact with what we see if true. Life is an ever changing and uncontrollable mix of gain and loss, pleasure and pain, and praise and blame. When we can rest in Equanimity Brahma Vihara we can hold all truths at the same time in one space of heart.