Oops. We all make mistakes. Most of the time, they’re small enough no one notices. But every now and then, we do something that makes us break into a cold sweat. The “Oops” becomes a curse, desperate pleas—or horrified silence as we process what just happened. In the moment, they’re panic-inducing. But once the dust settles, are those big mistakes that big of a deal? We hear three stories of people who wish they had an easy undo button. But making those mistakes taught them all something important—and changed how they do their jobs. Because those big mistakes end up being valuable lessons for the rest of their careers.