Imagine an old timber bridge: It appears strong and sturdy, but its timbers are starting to rot. The bridge will stand for a while, but eventually it will collapse. Suppose you repair the bridge. For a while, all will seem fine, but the wooden structure within is still rotten. Inevitably, the bridge collapses again. In this instance it is obvious that to have a solid bridge, the old one must be demolished and a new one built in its place.
The same principal may be applied to conflicts where resolve is seemingly impossible. To attempt to mend relationships with people whom you simply can not reason with is, at times, setting ones self up for failure. If after attempting to make amends you achieve little more than bitterness and resentment, it is better to acknowledge your failings, repent for your wrong doings, forgive yourself and let go -