We are called to be servants of the Lord.
"Who here qualifies for the job of overseeing the kitchen? A person the Master can depend on to feed the workers on time each day. Someone the Master can drop in on unannounced and always find him doing his job. A God-blessed man or woman, I tell you. It won't be long before the Master will put this person in charge of the whole operation." ~msg
What does a servant do? They carry out the will of the master. A servant doesn't tell his master what to do -- he performs whatever tasks the master requests of him. A servant doesn't choose what days or times it's most convenient to serve his master. A servant's function is simply to follow and obey his master's instructions. A servant does not develop a vision for the master either. The master is the one with the vision -- and he wants his servants to be ready and available to carry out that vision and bring it to fruition.
Being a good servant leads to...I call you no more servants, but friends.