Centuries ago, as God led the ancient Hebrews into the Promised Land, He specifically instructed them to clear the territory of the foreign tribes and to rid themselves of the influence of Canaanite civilization. From this example, we can draw an analogy for today. If we truly desire to grow deeper, pull together, and go further than skin-deep superficiality in our relationships, we must remove those things that hinder true community.
The thing that makes for greatness is determination, persisting in the same direction over the long haul. Success is the result of a long, painful, arduous, sometimes sacrificial process. In our world of instant everything these are not popular traits, but they lead to excellence.