Sales
Through out my career and working for various companies, I have gone through a few sales training programs - Miller Heiman, Sandler, SPIN, Dale Carnegie (in house, VP led) and Brooks.
Sales can be really simplified by thinking of two people/orgs at opposite ends of a bridge wanting to get to the middle to enjoy the view or make a deal.
Pro tip: If you go into a call with your own preset agenda you will lose more than you will win. Be open, flexible and friendly.
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