Emerging Africa

It seems that we are in the process of a shift in how we define church once again and as Phyllis Tickle so clearly shows in The Great Emergence - this is a phenomena which occurs every 500 years. Does it have to take that long for us to work out that we need to change ?
How do we find ways to reexamine our faith and explore again the ways in which we do things and then adjust if necessary and if not we'll need to open up to opportunities?