As mentiod in episode 1, An efficient salesman / saleswoman should be familiar with skills that help him/ her close the sales. Negotiation is one of the skills necessary for him/ her to close the deal successfully,
Negotiation is not an inherited talent, trait or special gift or ability, it is a LEARNABLE skill that can be acquired and mastered with practice.
the following video, by Brian Tracy, explains how get and master this skill, how and when to use it.
Enjoy