One should not pursue those things that are impossible or normally don’t happen. For example, one of us desires to become the king of Saudi Arabia. Although it is possible but it normally does not happen. Such a person will always remain in agony. One should desire those things that are possible and manageable for him.
Similarly, one should not waste his time in grieving over the injustice and abuse that were done to him in the past. This grief then affects all those that are around the person. Rather one should be happy with what one has, as this happiness brings about stamina and motivation.