Congregations seeking to transform realize they do not have to do it all alone. There are networks with whom they can relate. There are other Christian ministry organizations with whom they can collaborate. There are strategic partnerships they can build with even non-ministry organizations.
Congregations must first decide they do not have to have all the credit when good things happen. The credit belongs to God, and if other organizations want to claim some of that credit it may be okay. It is still amazing what you can get done if you do not care who gets the credit.