Each chapter is full of practical suggestions designed to facilitate this process. The end results is a congregation that understands their past, appreciates their present and proactively looks towards their future. The process is extremely time intensive. While they say a gifted leader can make this process successful, they often assert that an outside consultant might be helpful. I think outside consultants are essential as this allows the community to hear from an outsider who has no agenda except to help your congregation grow.
Polarities are unsolvable and unavoidable.
Your only choice is whether you will manage them well or manage them poorly. Some of the best material is in the Appendixes. Here there are excellent chapters on fasting, a congregational health inventory, prayer, and defining and understanding different sized congregations. The appendixes alone are worth the price.