Material progress and a higher standard of living bring us greater comfort and health, but do not lead to a transformation of the mind, which is the only thing capable of providing lasting peace. Profound happiness, unlike fleeting pleasures, is spiritual in nature. It depends on the happiness of others and it is based on love and affection.
Dalai LamaWe cannot learn real patience and tolerance from a guru or a friend. They can be practiced only when we come in contact with someone who creates unpleasant experiences. According to Shantideva, enemies are really good for us as we can learn a lot from them and build our inner strength.
Dalai Lama