The whole post was good, but here's a clip of what Jim Martin had to say about whether his work for God really mattered:
I do not want to be focused on myself, or the scorecard, or who seems to be ahead, etc. Rather, I want to be focused on my vocation or my calling before God. I want to believe that if my work is offered up to the Lord, then it is significant ministry. I want to always believe that God does not measure things the way we do. Rather, he is the God who is able to make much out of little. He feeds thousands with five loaves of bread and two fish. He is the God who blesses the most unassuming ministry and turns it into a powerful force for his purposes.