Harboring the feelings of friendship, compassion, happiness and disregard in the subjects of pleasure, pain, virtue and vice respectively purifies the chitta.

Sharing someone's happiness like a friend (rather than being jealous), being compassionate towards someone in pain (rather than deriving pleasure out of it or thinking it serves him/her right), supporting and encouraging virtuous acts by expressing happiness in them, and disapproval of unethical deeds and raising voice against them, helps clean the chitta of impurities that cloud its vision.