I recently received a copy of Sabbath in the City by Bryan P. Stone and Claire E. Wolfteich (WJK Press, 2008). The two authors led the project called "Sustaining Urban Pastoral Excellence" conducted by Boston University School of Theology and its Center for Practical Theology. This project was part of the Pastoral Excellence grant program funded by Lilly Endowment and was the only project specifically focused with urban pastors.
I recommend this book for your reading. I like to share with you a few quotes from this book -
"One thing is certain: urban churches that are intentional about remaining and thriving in the city must be committed and open to change. Indeed, some of the congregations that not only survive but thrive in the city have come to see their relationship to the ever-changing urban context as a pilgrimage - as an opportunity to be embraced hopefully rather than an obstacle to be hurdled...... An excellent urban pastor is one who can tolerate ambiguity and has a relative comfort with a high degree of chaos (pg. 8)."
"There may be no place to 'stand' in the city... or certainly no place to stand still. But one of the empowering messages heard repeatedly from urban pastors is that in the midst of transition it is important to remember that the church is God's not ours (pg. 9)"
Though these words are directed toward urban churches and pastors, I believe they speak to all churches. Food for thought!