Some congregations God has blessed with the opportunity to grow, eg. growing population, people coming to an area, better accessibility, yet for some reason they do not grow. Some suggest that is because different size congregations require a different approach to structure, administration, etc. .
Alban institute has dedicated part of their web page to this very topic...it is called Raising the roof
In one section they have identified 4 essential leadership qualities for growth and change:
Excavating the congregation’s religious culture(s)
Creating a foundation of authority for change using the congregation’s own cultural materials
Enriching the congregation’s practices of democracy and discernment
Locating the congregation on an organizational “System Change Index”
These are explored in more detail at: http://www.alban.org/raisingtheroof/foundations.asp