Do you not know that in a race all the runners run, but only one gets the prize? Run in such a way as to get the prize. Everyone who competes in the games goes into strict training. They do it to get a crown that will not last, but we do it to get a crown that will last forever. Therefore I do not run like someone running aimlessly; I do not fight like a boxer beating the air. No, I strike a blow to my body and make it my slave so that after I have preached to others, I myself will not be disqualified for the prize.
Paul’s words need to be seen in context (link takes you to 1 Corinthians 9 and 10). This was all for the gospel, which is all about reaching people. It means the good news, so that is Paul’s aim given his mission. And by extension it seems clearly that he is calling the entire Corinthian church to the same commitment, of course in their various callings, but this one call directing all of that.
It’s our mentality and attitude up front that is crucial, which is why we’re told that we’re not to be conformed to this world, but instead transformed by the renewing of our minds. Paul’s heart and mind were for Christ and the gospel, and involved in that is not only the message, but the medium for the message which must never contradict the message itself. Paul, and by extension we are that medium. Yes, not all of us are called to proclaim the good news like Paul was as the apostle to the Gentiles. But we are all called to be witnesses to it, which will involve both word and deed. Our lives must line up with what we say, otherwise our words will be empty.
It is utterly crucial for anyone in the ministry to take the hard discipline Paul exerts on himself to heart for themselves. When you read the passage in context (again, see link above) you will note that it’s about the gospel, and with reference to sexual immorality and idolatry. Money, power and sex, not necessarily in that order, have grounded many an aspiring person to follow Christ. Or perhaps it uncovered their true heart. At any rate, we are told in this passage that we all must be careful, and beware lest we fall into the same trap (1 Corinthians 10:1-13).
Yes, we are present to work, to roll up our sleeves and be in God’s work by his grace in Jesus. Whatever form that work might take. What God has put in front of us, what we can do and find joy in doing in that work, we must give ourselves to fully. Rest is good, and must be incorporated along the way. But the work is what we’re called to, and what we must not let go of. And that requires a commitment and the discipline that goes with that. All for the gospel in and through Jesus.