I serve on a board that examines candidates for ministry. A few years ago a man came before us who wanted to be a pastor. We asked him, "What are your hopes for your future ministry?"
He said, "My grandfather was a switchmaster for a railroad. His job was to take a piece of metal twelve miles long and mechanically move it six inches in one direction or another. He had to know where each train was supposed to go. It wasn't a huge job, but it was important because if he made a mistake, the train ended up in the wrong place."
Then the candidate for ministry added, "I do not have great ministerial gifts, but I'd like to take the gifts I have been given and use them faithfully. I believe that if I do that it will make a difference in where people end up."
We approved him.
You do not need to be the most gifted person around to make a huge difference.