" Charm is another overrated ability. Note that I called it an ability, not an inherent feature of one’s personality. Charm is almost always a directed instrument, which, like rapport-building, has motive. To charm is to compel, to control by allure or attraction. Think of charm as a verb, not a trait. If you consciously tell yourself, “This person is trying to charm me” as opposed to, “This person is charming,” you’ll be able to see around it. Most often, when you see what’s behind charm, it won’t be sinister, but other times you’ll be glad you looked. "

― Gavin de Becker , The Gift of Fear: Survival Signals That Protect Us from Violence