Nic over at 3DM nails it on the head as he goes through his 9 tips for transitioning a church to missional:
6. Don’t underestimate how long the process will take
As always I underestimated how long it would take for others to catch the heart of what it meant to raise missionary disciples through authentic, outwardly focused community. Why did I think that something that had taken me over a year to thoroughly investigate would be caught by the masses through a few preaches and some written material? How dumb can you be and still breathe!
This is a long process.
And it can be a long time before there is numerical, statistically relevant evidence of a growing community.