Peace of mind is the basis of a healthy body and a healthy mind; so peace of mind, a calm mind, is very, very important.
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