Every painful event contains in itself a seed of growth and liberation. In the light of this truth return to your life now and take a look at one or another of the events that you are not grateful for, and see if you can discover the potential for growth that they contain which you were unaware of and therefore failed to benefit from. Now think of some recent event that caused you pain, that produced negative feelings in you. Whoever or whatever caused those feelings was your teacher, because they revealed so much to you about yourself that you probably did not know. And they offered you an invitation and a challenge to self-understanding, self-discovery, and therefore to growth and life and freedom.
— Anthony de Mello, The Way to Love