The Christian's optimism is a consequence of his faith, not of circumstances. He knows that the Lord has arranged everything for his greatest good, and that he knows how to draw fruit even from apparent failures; at the same time, he asks us to employ all the human means at our disposal, without leaving a single one: the five loaves and the two fish. They were very little in comparison with so many who were hungry after a long day, but it was the part they had to put in for the miracle to take place.
Our Lord makes failures in the apostolate (a person who does not respond, who turns his back, repeated refusals to take a step forward on his path towards God...) sanctify us and make us holy; nothing will be lost. What cannot bear fruit are the omissions and delays, the failure to act because it seems that we can do little or that the resistance of the environment to Christ's message is too much. The Lord wants us to put in the few loaves and fishes that we always have and to trust Him with right intention. Some fruits will come soon, others the Lord reserves for the moment and the opportune occasion, which He knows well; they will always come. We must convince ourselves that we are nothing and can do nothing on our own, but Jesus is at our side, and "He, to whose power and knowledge all things are subject, protects us by his inspirations, against all foolishness, ignorance, closeness and hardness of heart.
The Christian's optimism is strongly strengthened by prayer: "it is not a sweet optimism, nor is it a human confidence that everything will turn out well.
"It is an optimism that sinks its roots in the awareness of freedom and in the security of the power of grace; an optimism that leads us to demand of ourselves, to strive to correspond at every moment to God's calls, "7 to be attentive to what he wants us to do. It is not the optimism of the selfish person who seeks only his personal tranquility, and for that he closes his eyes to reality and says "everything will be all right" as an excuse not to be disturbed, or refuses to see the evils of his neighbor in order to avoid worries or to have to remedy them The radical optimism of those who follow Christ closely does not distance them from reality. With his eyes open and vigilant, he knows how to confront it, but he does not get caught up in the evil that he sometimes contemplates, nor is his soul filled with sadness, because he knows that in no circumstance does his Father God leave him by the hand, and that he will always draw disproportionate fruit from that land, from those circumstances or those friends, where it seemed that only thistles and nettles could grow. The Christian knows that "the good work will never be destroyed, and that to bear fruit the grain of wheat must begin to die under the earth; he knows that the sacrifice of the good is never sterile.
https://www.hablarcondios.org/meditaciondiaria.aspx