There are two very different ways to view service in the kingdom of God. They reflect two totally opposite understandings of what really constitutes "working" for the Lord.
The first view holds that a person's effectiveness and growth potential is directly related to the number of things he does in the public assemblies. Those who think this way are disappointed if there are limited opportunities to lead singing, word prayers, make announcements, wait at the Lord's table, etc. Frequently they will voice concern that they are "not being used," or are "not growing" if they don't have numerous chances each month to perform these functions. They seemingly like the "limelight," and feel unproductive if they can't be in front of the crowd. Such folks are typically unhappy in a larger congregation, because a larger group naturally limits the frequency of such "public" activifies.
Others have a different outlook on these things. Yes, they are more than willing to do what they can in the worship services. Do you need a song leader, or someone to "fill in" when the preacher is gone? Need a teacher for the junior high or high school class? You need only ask - they are ready. But, these folks feel that such opportunities are only "icing on the cake." They understand that real service is something that springs from a heart that is fully and deeply dedicated to God. If there is something of a "public" nature that needs done, they'll gladly to it. But they are not sitting back waiting only for such opportunities - and moaning if they don't come. Instead, they are making their own opportunities by teaching their own families, neighbors and coworkers. They see to the needs of the sick and downtrodden. They WORK! And they do it regardless of whether or not there is someone standing by to observe them.
It is this second view that is clearly taught by our Lord (Mt. 23:11; Lk. 22:26). Think!