Do your work as unto the Lord? What does that even mean?

"Always give yourselves fully to the work of the Lord, because you know that your labor in the Lord is not in vain." - 1 Corinthians 15:58

We are servants of the Most High

Am I now trying to win the approval of human beings, or of God? Or am I trying to please people? If I were still trying to please people, I would not be a servant of Christ. - Galatians 1:10