No question, humility before God and our fellow man is a very important trait to model. It keeps us centered, with the right frame of mind. If we forget this fact, it is far too easy to loose the Christian prospective of servitude...
A lot of people, even a number of believers, have a problem with such terms as "servant" or "slave." No doubt this comes from the worldly associations with things like "prejudice" and "lower social status." However, these things have nothing to do with the kind of slavery we are speaking of here.
I wrote an article not long ago regarding the subject of spiritual slavery versus slavery to our worldly passions. Several readers, mostly believers, commented on how hard it was to picture themselves as a "slave," even to righteousness. Yet, everyone of us is a slave to something! We are seravnts to whatever masters us; either the things of God, or the things of this world (Romans 6:16).
In order to better accept our role as spiritual servants, we must set aside all other things, including our very selves, and make the Lord the first priority. This can be a difficult thing to do, and will probably take some time and Christian maturity to accomplish. But if we can accept this role in the eyes of the Lord, and before others, the Lord will lift us up (James 4:10)!
The Lord asks nothing from us which He didn't example while in His earthly ministry. Consider the words of (Philippians 2: 5-9), which says:
"Your attitude should be the same as that of Christ Jesus: Who, being in very nature God, did not consider equality with God something to be grasped. But (He) made himself nothing, taking the very nature of a servant, being made in human likeness. And being found in appearence as a man, he humbled himself and became obedient to death-even death on a cross! Therefore God exalted him to the highest place and gave him the name that is above every name..."
In light of these words, we should be like-minded, having the same kind of love, and being united in message and purpose. We should not be selfish nor self-centered, but look to the interests of our Lord and His work of salvation. Being a servant to the gospel message is a far more glorious thing than any status or position which this world can offer!
May the Lord bless all humble servants who labor for Him!