Rob Cross, management professor at Babson College, says people are changing jobs more than ever and too often falling short when they do. Surveys show nearly half of people promoted within their own companies are underperforming 18 months later. And up to half of executives in new roles are seen as eventual disappointments. Cross says research shows that’s because today’s hyper-collaborative workplaces demand new skills. He shares evidence-based practices to improve a role transition. Those include developing strategic networks and expanding the scope and impact of one’s projects. Cross is a coauthor of the HBR article "How to Succeed Quickly in a New Role."