It is important to remember that understanding the other's case does not mean agreeing with it. Speakers should direct their speech toward the other parties and keep focused on what they are trying to communicate. Each side should avoid blaming or attacking the other, and should speak about themselves. Generally the best way to deal with people problems is to prevent them from arising. People problems are less likely to come up if the parties have a good relationship, and think of each other as partners in negotiation rather than as adversaries.
Good agreements focus on the parties' interests, rather than their positions.
When a problem is defined in terms of the parties' underlying interests it is often possible to find a solution which satisfies both parties' interests. The first step is to identify the parties' interests regarding the issue at hand. This can be done by asking why they hold the positions they do, and by considering why they don't hold some other possible position. Each party usually has a number of different interests underlying their positions. And interests may differ somewhat among the individual members of each side.