Julia failed because she did not make the leap from being a strong functional performer to taking on a cross-functional, project-leadership role. She failed to grasp that the strengths that had made her successful in marketing could be liabilities in a role that required her to lead without direct authority or superior expertise. She kept doing what she knew how to do, making her feel confident and in control. The result, of course, was the opposite. By not letting go of the past and not fully embracing her new role, she squandered a big opportunity to rise in the organization.