Ministry is not the hardest thing anyone can do.
But it has a unique character; and a particular aspect of that character needs a particular awareness in order to go the long-term.
From Jeff Robinson at Crossway blog.
Jesus said it best in John 15:5: Apart from me you can do nothing. As a pastor, you either learn early to write that over the door of your heart or you don’t last long in ministry. It’s really just that simple. One of my favorite passages in my first few years of ministry was Mark 4:26-28 where Jesus tells the parable of the seed. It’s very pithy, there are just a couple of verses. The farmer plants the seed and then he goes to bed. When he gets up, lo and behold, the seed has germinated, grown, and he knows not how. Of course, we know how. We know it’s the grace of God.
God has invested this gospel truth in you, but it’s not about you because you can’t do anything to save people or sanctify people.
You realize pretty early that the call to pastoral ministry is not like anything else you’re going to do in life. You’re likely not going to have product at the end of the day. You’re not going to have widgets that you’ve made. You’re not going to have a byline at the top of the page or anything like that.