I often feel I'm an alien in this world. Don't seem to have a purpose. I don’t fit into the world, nor into any religions except the type that the apostle James talked about. But I put those feelings of loneliness and uselessness aside, and rest in the goodness of the Lord, and acknowledge that we are all on a path of spiritual growth, and am reminded that God's grace is my sufficiency.
For most of we Christians, our fellowship with other Christians is our ministry, just being there for them and vice versa. As far as the unbelievers are concerned, our ministry for them is that we walk morally upright in their midst, and it is by such chaste behaviour that we might cause some to inquire of our faith, and what we hope for.