People nowadays tend to switch roles a lot more frequently than previous generations ever did. Millennials and Gen Z’ers will have on average twelve different jobs throughout their lives. Internal moves are also increasingly common. But those transitions aren’t easy, even if you move to a new role within the same company. A Gartner survey indicates that 49% of people promoted within their own companies are underperforming up to 18 months after the change. That’s surprising, isn’t it? After all, these people know the company, they have the right skills and experience and they’ve been vetted for cultural fit. So why are they performing so poorly?