The four Brahma Viharas are loving-kindness, compassion, joy and equanimity. The foundation practice is metta, or loving-kindness, which cultivates a friendly and kind attitude towards ourselves, others and all experiences. When this caring heart meets suffering, it naturally responds with compassion. But the last Brahma Vihara, equanimity, the quality of calm acceptance, is necessary keep the heart in balance and open to all the joys and sorrows of our lives.