There are lots of one day training classes that are pretty effective taught by Miller Heiman, Huthwaite, etc.<p>I took one in grad school, the professor's background is a huge contributing factor.  Fortunately ours was pretty good and certainly experienced in selling and sales instruction;<p><a href="http://www.kenan-flagler.unc.edu/Faculty/search/detail.cfm?person_id=721" rel="nofollow">http://www.kenan-flagler.unc.edu/Faculty/search/detail.cfm?p...</a>