The point of the Shambhala training is to get out of the cocoon, which is the shyness and aggression in which we have wrapped ourselves. When we have more aggression, we feel more fortified. We feel good, because we have more to talk about. We feel that we are the greatest author of the complaint. We write poetry about it. We express ourselves through it. Instead of constantly complaining, can't we do something positive to help this world? The more we complain, the more concrete slabs will be put on the earth. The less we complain, the more possibilities there will be of tilling the land and sowing seeds. We should feel that we can do something positive for the world instead of covering it with our aggression and complaints.
From Great Eastern Sun: The Wisdom of Shambhala, page 6.