In business, there’s an expression: To have and to hold, from this day forward. … Oh, wait, that’s a marriage vow. And even then it doesn’t bind. Here in the sales-verse, people coming and going like serial monogamists can sting your bottom line: Onboarding new hires is costly and time-consuming. Organizations must pay to find and vet potential new hires; they also need to invest at leas...