Jesus teaches the way of poverty, and he lived it. He says clearly that we must renounce all of our possessions. But he goes further and says that we must even renounce our relationships and our very selves as well. Why? Probably because we have done these things so poorly in the past, and these unhealthy patterns have become so ingrained that only complete renunciation will allow us to break free. Jesus on the cross is the ultimate example of poverty. It was there that he gave up not only possessions and relationships but also his very life. He not only taught the way of the cross, the way of poverty, but he actually became that way.
Not to be attached to peace in such a way as to be disturbed by the prospect of losing it, but strive for peace by active humility and obedience and renunciation of my will in order to please God—keep empty. It is essential to our vocation and therefore a duty.