As some have noted, introverts are “geared to inspect,” while extraverts are “geared to respond.” Selling of any sort—whether traditional sales or non-sales selling—requires a delicate balance of inspecting and responding. Ambiverts can find that balance. They know when to speak up and when to shut up. Their wider repertoires allow them to achieve harmony with a broader range of people and a more varied set of circumstances. Ambiverts are the best movers because they’re the most skilled attuners.

To Sell Is Human by Daniel H. Pink