During any negotiation, you should consider the value of the deal that you’re negotiating. From that, you can assess how important it is to commit your time to the outcome and to what degree your value proposition is aligned with the opposing negotiator.
To the degree the outcome is “more trouble than it’s worth”, you can exit the negotiation sooner than later, or choose to alter your perspective per the value the outcome might contain. Always remember, value resides in the mind. Thus, that which you place value on may or may not be at the same level as the opposing negotiator. Also, remember that value proposition is a two-way street; the opposing negotiator’s value proposition may differ from yours.
Remember, you’re always negotiating!