Look at Jesus' own ministry, it was not efficient, at least not until after His resurrection and Ascension, and the descent of the Holy Spirit, when it multiplied exponentially. This is why, as we were exhorted in yesterday's Gospel, to put everything we do at the service of bringing about God's reign. It is a matter of trust; the work of Another. It is not my work. I have merely been called to help as a laborer in the Lord's vineyard. I am certainly under no illusion that I am the best, or even the most diligent worker in the vineyard, let alone the most gifted. I am grateful beyond measure to be called to the work I have been given and I pray that I am a good steward of those gifts I have received, as meager as they might be.
Judged by any worldy criteria, we might well determine pastoral ministry isn't worth the effort.