In any event, virtually no negotiation involves one and only one issue. More Than One Option-Seldom do negotiations break down to only one option. There are almost always several choices of action. If both parties are not happy, then performance becomes the problem. Anyone can shake hands on a deal.
Performance only follows if benefit is derived.
Too Much Grinding-Negotiation is a skill and an art. Understanding and using tactics is relatively simple. Long-term doesn't necessarily mean over a lifetime. It can show up later in the same negotiation session. Be careful about grinding someone down on one point.