Almost any sales book, any sales class, and any sales training will mention this sentence-sales begin with rejection. Successful salespeople have a heart that never gives up. Like soldiers, "three hardnesses" are their basic characters (tenacity, persistence and firmness). They have experienced countless rejections, countless supercilious glances and countless cynicism. So, if possible, please be kind to salesmen. If you don't know salespeople, please look at two figures "Li Yunlong" and "Xu Sanduo" who are regarded as classics in the sales circle.
Successful people are paranoid.