Do your small groups feel like they might be old news in your church? Maybe people know they are expected to be a part of a small group, but they are not excited to actually participate. It's like the life has gone out of the small groups ministry.
There are hundreds of references in the New Testament to the church being a family. Think about all the times the authors refer to church members as brothers, sisters, mothers, sons, daughters, children, family of God, etc.. It was this way from the start of the church.