Consider what the realistic outworkings of ‘mission’ are likely to be.
I begin with vocation, by which I mean a Christian’s life-work. We often given the impression that if a young Christian man is really keen for Christ, he will undoubtedly become a foreign missionary, that if he is not quite as keen as that he will stay at home and become a pastor, that if he lacks the dedication to be a pastor, he will no doubt serve as a doctor or teacher, while those who end up in social work or the media or (worst of all) in politics are not far removed from serious backsliding! It seems to me urgent to gain a truer perspective in this matter of vocation. Jesus Christ calls all his disciples to ‘ministry’, that is, to service. He himself is the Servant par excellence, and he calls us to be servants too. This much then is certain: if we are Christians we must spend our lives in the service of God and man. The only difference between us lies in the nature of the service we are called to render. Some are indeed called to be missionaries, evangelists or pastors, and others to the great professions of law, education, medicine and the social sciences. But others are called to commerce, to industry and farming, to accountancy and banking, to local government or parliament, and to the mass media, while there are still many girls who find their vocation in home-making and parenthood without pursuing an independent career as well. In all these spheres, and many others besides, it is possible for Christians to interpret their lifework christianly, and to see it neither as a necessary evil (necessary, that is, for survival), nor even as a useful place in which to evangelize or make money for evangelism, but as their Christian vocation, as the way Christ has called them to spend their lives in his service. Further, a part of their calling will be to seek to maintain Christ’s standards of justice, righteousness, honesty, human dignity and compassion in a society which no longer accepts them.
John Stott, Christian Mission in the Modern World, pp. 31-32.
Note: This book was written in 1975, and some of his language may seem out of step with our current norms. Please consider the intent behind his words, not his choice of words, which were culturally acceptable at the time they were written.