Never underestimate the ability of God to work powerfully through you when you simply do what He has called you to do at this moment. He may not call you to be a pastor or a well-known evangelist, but He has called you to your own ministry. Whatever that is, whether that's raising children to love the Lord, praying for a neighbor, or sharing the gospel with others, if you'll do it faithfully, in God's strength and to the best of your ability, though you may not see results in this lifetime, He will do amazing things. This is but one such story.
"For as the rain comes down, and the snow from the heavens, and does not return there, but waters the earth, and makes it bring out and bud, and give seed to the sower and bread to the eater; so shall My Word be, which goes out of My mouth; it shall not return to Me void, but it shall accomplish what I please, and it shall certainly do what I sent it to do. For you shall go out with joy, and be led out with peace; the mountains and the hills shall break out before you into singing, and all the trees of the field shall clap their hands." (Isaiah 55:10-12)