Recall your peers – siblings, friends, and colleagues – and consider that they have kept you company, befriended you, and assisted you when you needed help. Recall that instead of caring about them in return, you have criticized and blamed them, called them names, been inconsiderate or jealous of their successes. Confess this, purify, and dedicate your merit to them. Contemplate your peers in previous lives and think in the same way.
— His Holiness the Dalai Lama, Thubten Chodron in Buddhism: One Teacher, Many Traditions