There is a scene in The Devil Wears Prada 2 where legendary fashion editor Miranda Priestly, played by Meryl Streep, is walking alone through Milan’s fashion district. Her influence has been built on instinct and staying ahead of the culture. But in an industry increasingly shaped by social media, younger voices, and constant reinvention, she begins quietly questioning her own relevance. Arriving back at the hotel, she asks her husband, Stuart, when a person knows it’s time to step aside. “You’ll know when it’s time,” he says. “You’ll just know it.” It’s one of the most common mantras about work, aging, and ambition, and it assumes that people will instinctively recognize when to slow down, step away, or reinvent themselves. But despite Stuart’s attempt to reassure his wife, that moment is no longer clear in our graying society . I research aging, mental health, and life transitions . As people live longer, work can become more than a paycheck.…