Even while retaining a clear sense of the differences in positions, and an understanding that there are often real conflicts of interest, avoid projecting an 'us' and 'them' feeling.

If you are working with people on an ongoing committee, it is important to keep up a good working relationship. This is often more important for future decisions than the outcome of one particular negotiation. Talk to other members before and after meetings, think of them as colleagues, rather than as enemies you need to avoid.

Fight over the issues, do not fight because of personal animosity. You will gain respect from people if you present a strong, logical argument without holding any personal antipathy.