"Sometimes it seems that our work is fruitless, but mission is not like a business transaction or investment, or even a humanitarian activity. It is not a show where we count how many people come as a result of our publicity; it is something much deeper, which escapes all measurement. It may be that the Lord uses our sacrifices to shower blessings in another part of the world which we will never visit. The Holy Spirit works as he wills, when he wills and where he wills; we entrust ourselves without pretending to see striking results. We only know that commitment is necessary."
Pope Francis, Joy of the Gospel