"Whatever you do, work at it with all your heart, as though you were working for the Lord and not for people" Colossians 3:23, TEV)
The apostle Paul teaches that we are to work as though we are "working for the Lord and not for people." He's saying that no job is too small; no job is too menial; no job is too insignificant when you have the right motive and perspective. We should think, "I'm doing it for God; I'm doing this job as if I'm doing it for the Lord." I used to clean meat lockers in a butcher shop, and I would clean them as unto the Lord.
Now, how do I know if I'm doing my work for the Lord? Two characteristics will show up in your attitude: excellence and enthusiasm.
First, if I'm doing my work, not for the boss but for the Lord, I'll do it with excellence. That means I give it my best shot. I do the best I can because I'm not doing it for anyone's approval, except God's. I do it with excellence, being the best I can be.
Second, I do my work with enthusiasm. I'm working for God; therefore, I do it with a cheerful attitude. "Never be lazy, but work hard and serve the Lord enthusiastically" (Romans 12:11, NLT).
When you are working with all your heart, motivated by the love of Christ, your work is transformed into an act of worship for God.