Matthew 25:21 His lord said unto him, Well done, thou good and faithful servant: thou hast been faithful over a few things, I will make thee ruler over many things: enter thou into the joy of thy lord.
I used to sell newspaper subscriptions door to door and deliver flowers for a living. I also volunteered for years with my churches inner city bus ministry. My wife waited tables and cleaned houses. She volunteered with a number of ministries, doing youth work and teaching worship dance among other things. Never could we imagine that the Lord would take us to Israel and use us in full time ministry in this capacity. Neither of us ever did anything great in this world but we were faithful in some little things and God found it in His heart to promote us.
D.L. Moody once said, "A good many are kept out of the service of Christ, deprived of the luxury of working for God, because they are trying to do some great thing. Let us be willing to do little things. And let us remember that nothing is small in which God is the source."
The Lord is always looking for opportunities to promote us - to take us to a higher calling. The problem is that we're often so busy trying to promote ourselves that He can't get a word in edgewise!
Let's not neglect the little things God has put in our path to do. Help clean the church once a week, bless that neighbor or family member God has put on our heart, share the gospel with a coworker. Those little things will eventually lead to bigger things -- don't you doubt it! There's so much work to be done!