I appreciate this post by Tim Challies on friendship. There is nothing like a friend who can tell you to snap out of it and quit being a jerk.
Often the best way to gain objectivity is to appeal to a friend for an outside perspective. It may be that each of us appeals to a personal friend or that together we appeal to a mutual friend. But either way, a close friend is able to listen, to evaluate, and to offer guidance. Some of the best counsel I’ve gotten from friends is of the “you need to stop being a jerk” variety. Friends have helped me better love those I love most.