I sometimes get kidney stones. They are nasty little critters that cause me a considerable amount of discomfort and pain. When I get them, my whole entire body reacts. I want to curl up in bed in a little ball and stay there. My whole being is concentrated on doing what I can to feel better and make the pain go away.
It should be the same for the Church family. We are a family, but the Bible also describes the Church as the body. (For I say, through the grace given unto me, to every man that is among you, not to think of himself more highly than he ought to think; but to think soberly, according as God hath dealt to every man the measure of faith. For as we have many members in one body, and all members have not the same office: So we, being many, are one body in Christ, and every one members one of another. -Romans 12:3-5) As the body of Christ, if one of us is hurting in some way, we should all hurt and do all we can to help that one to get better, however we can.
There is no such thing as an unimportant member of the Lord's Church, the body. We are all important to Him and to one another. I don't see my kidneys. I don't even normally think about them when I think about my body. I think about the visible aspects. I don't think about them being important. But let me tell you - when they are sick, they are the only thing I'm focusing on. They are important to me. Just because someone doesn't do a public job in the congregation doesn't mean they are any less important either. Most people probably don't think about the little things that get done while nobody is looking - cleaning the scuff marks off the floor, emptying trash cans from classrooms, filling the communion cups. It all has to get done, and it's all important.
EVERYONE has a vital role in the Lord's body, the Church. Are my kidneys important? Absolutely! My body cannot function without them. Just the same, the body of Christ cannot function without every member working and doing his part. What happens if we don't think our role is important, so we just don't do it? Well, everyone's job is to go and spread the gospel, not just the preacher. Think of your friends who won't know about Jesus and His salvation if you're too scared to say anything to them. Are you willing to let them go to hell because you are afraid of what they will say to you?