At first glance, not very much.

One keeps us alive through the quiet, complex work of filtration and balance. The other helps leaders understand how they create value, build trust, and make an impact. Yet earlier this month, I found myself talking about personal leadership brands at the annual congress of the European Renal Association, bringing together experts from across the renal community.

Imagination is not always the first quality associated with leadership. We tend to prioritise analysis, execution, and results. And yet, imagination is often what allows leaders to see beyond what is—to sense what might be possible, and to create the conditions for it to emerge.

A clear personal purpose is one of the most quietly powerful assets a leader can have. It is not a slogan or a polished line for a profile; it is a deeply felt sense of why you lead and what you are here to contribute.

Energy is one of the most overlooked aspects of leadership. We often talk about time, strategy, and capability—but far less about the quality of energy a leader brings. And yet, it is energy that shapes presence, influences decision-making, and sets the tone for everyone around you.

Clear decision-making sits at the heart of effective leadership. Every day, leaders are asked to make choices—some small and immediate, others complex and far-reaching. Yet the real challenge is rarely the volume of decisions; it is the clarity with which they are made.

Imagination is not always the first quality associated with leadership. We tend to prioritise analysis, execution, and results. And yet, imagination is often what allows leaders to see beyond what is—to sense what might be possible, and to create the conditions for it to emerge.