Maitri karuna mudita upekshanam sukha duhka punya apunya vishayanam bhavanatah chitta prasadanam
"By cultivating attitudes of friendliness toward the happy, compassion for the unhappy, delight in the virtuous, and disregard toward the wicked, the mind-stuff retains its undisturbed calmness."
-Yoga Sutras of Patanjali, I.33
Swami Satchidananda comments:
"Whether you are interested in reaching samadhi or plan to ignore Yoga entirely, I would advise you to remember at least this one Sutra. IT will be very helpful to you in keeping a peaceful mind in your daily life. You may not have any great goal in your life, but just try to follow this one Sutra very well and you will see its efficacy. In my own experience, this Sutra became my guiding light to help keep my mind serene always."
* maitri = friendliness, pleasantness, lovingness
* karuna = compassion, mercy
* mudita = gladness, goodwill
* upekshanam = acceptance, equanimity, indifference, disregard, neutrality
* sukha = happy, comfortable, joyous
* duhka = pain, misery, suffering, sorrow
* punya = virtuous, meritorious, benevolent
* apunya = non-virtuous, vice, bad, wicked, evil, bad, demerit, non-meritorious,
* vishayanam = regarding those subjects, in relation to those objects
* bhavanatah = by cultivating habits, by constant reflection, developing attitude, cultivating, impressing on oneself
* chitta = mind field, consciousness
* prasadanam = purified, clear, serene, pleasant, pacified, undisturbed, peaceful, calm
Read another commentary here.