"Instead of being hopeful, you develop another attitude, which is that of the warrior. If a warrior lives within hope, that makes him a very weak warrior. He is still concerned with his success. If the warrior no longer has the hope of achieving success, he has nothing to lose. Therefore enemies find it very difficult to attack him. The warrior will also regard a defeat as a victory, since he has nothing to lose.
This approach is called "luring an enemy into your territory." You lure enemies into your territory by giving in to defeat constantly. The enemies finally find that there is nothing to attack, and they feel they have been fooled. They keep on conquering more territory, but their opponent places no value on the territory and does not put up a struggle. This eventually causes the enemies to lose heart."

~Chogyam Trungpa Rinpoche