Every day, people scroll through feeds, flip through glossy magazines, and overhear advice that promises to make life better. Many of these so-called life tips sound reasonable enough to be true—so they stick around for decades, repeated from one generation to the next. The catch? Some of the most popular tips were never about better living at all but about selling a product or service.
Clever marketers planted these ideas into the public mind, and millions bought in, both figuratively and literally.
