Generations: The Real Differences Between Gen Z, Millennials, Gen X, Boomers, and Silents—and What They Mean for America's Future

by Jean M. Twenge

So the idea that Millennials are highly self-confident is true—but it’s also true they didn’t come up with those ideas out of nowhere. Their parents, teachers, and the culture at large told them to feel good about themselves, and they did.