By saying "blessed are those who mourn", Jesus does not intend to declare an unfortunate and burdensome condition in life to be happy. Suffering is not a value in itself, but a reality that Jesus teaches us to live with the correct attitude.
Pope FrancisJesus speaks in the silence of the mystery of the Eucharist and reminds us each time that following him means going out of ourselves and making our lives not something we 'possess,' but a gift to him and to others.
Pope Francis