Being Right Isn't Winning
Being right is an ego thing. Just because you feel that you are right does not make it so. It also does not mean that others agree; or should agree. Being right is a perception colored by interests, needs, history, emotion, perceptions, and, all too often, self-deception.
Thinking that you are right is almost always biased.
Don't let your ego blind your vision and foil an opportunity to advance your cause. Achieving your objectives and goals should be more important that assuaging your ego. We often lose sight of this. It is a dangerous mistake to make in a negotiation and can result in a satisfying victory at the cost of losing the war.
Equally important is to consider the other person's reaction to losing. Will a loss cause more than a material loss? Will it leave an emotional scar or, worse, terminal injury?
When handling conflict with family, friends business associates or even adversaries consideration should be given to the relationship and its value over and above the incident at hand. Do not ruin a valued relationship just to point out that you are right or gloating when you are victorious.
Negotiating can be a very personal activity. People become empassioned when arguing with those close to them because they care. They are emotionally invested with the relationship. How you handle these situations will color the emotional health of the relationship in the future.