The move from leading a function to leading an enterprise is the hardest step in a career. Around four in ten senior leaders underperform or exit within 18 months of making it, and it is rarely a capability problem. This audit measures all four sides of the transition: your readiness for the role, your readiness to become the leader the role requires, the old patterns that could derail you, and whether you can withstand the discomfort of becoming someone new.