Emotional Intelligence: The Operating System for Sustainable Leadership

I have spent years developing my emotional intelligence, and I still consider it work in progress. That is probably one reason I remain so interested in it.

Understanding my own reactions does not mean that I always regulate them perfectly. I can recognise that pressure is affecting me and still respond too quickly, or know that I am frustrated and have to work quite deliberately not to let that frustration shape the conversation that follows.

For me, this is where emotional intelligence becomes real. It is not about being endlessly calm, empathetic or self-aware, but about noticing what is happening within us early enough to retain some choice over what happens next.

Pressure changes more than behaviour

We often notice emotional intelligence through behaviour: how a leader handles conflict, listens, gives feedback or responds under pressure. What interests me increasingly is what happens before the behaviour, because emotion also affects interpretation.

A stakeholder challenges your view. Are they resisting you, or telling you something you need to hear?

A decision takes longer than expected. Is the organisation avoiding accountability, or have you not yet understood how authority really works?

Your team wants more direction. Are they lacking ownership, or responding to uncertainty that existed before you arrived?

What matters is recognising that our first interpretation is not emotionally neutral.

This becomes particularly relevant during a leadership transition. A leader may be highly experienced while still having limited context. Relationships are unfamiliar, expectations are forming and credibility is still being established, often alongside considerable pressure to demonstrate value.

In those circumstances, it can be difficult to separate what is actually happening from our own response to it.

I have had to learn to pause before acting and ask myself: What do I actually know, what am I assuming, and how might my own reaction be influencing the way I see this?

It is a small distinction, but it can materially change what happens next.

Emotional intelligence is not the same as being nice

Emotional intelligence has sometimes been oversimplified in leadership development, while the research itself is considerably more nuanced.

A recent comprehensive review found positive associations between leaders’ emotional intelligence and outcomes including leadership effectiveness. At the same time, the authors highlighted continuing debate about how emotional intelligence is defined and measured, how distinct it really is from other characteristics, and whether emotional skills can sometimes be used in self-serving ways.

I think that last point is important because being able to read people does not automatically make someone a good leader.

Emotional awareness can be used to build trust and understand different perspectives, but it can also be used to manage impressions, avoid challenge or influence people primarily in the leader’s own interests.

That distinction is worth taking seriously.

For that reason, I would not argue that organisations simply need leaders with ‘more EI’. I am much more interested in what emotional awareness enables the leader to do.

Does it improve judgement and make difficult information easier to surface?

Does it help the leader remain open to challenge and build strong relationships without diluting accountability?

Those questions tell us considerably more than an emotional-intelligence score alone.

What the organisation experiences

Emotional intelligence is personal, but its consequences rarely remain personal.

People notice how a leader responds when challenged. They notice whether bad news is genuinely welcome or merely described as welcome, and whether disagreement is met with curiosity, impatience or defensiveness. Over time, they adjust their own behaviour accordingly.

Some will raise concerns early; others will wait. People may continue to challenge the leader’s thinking, or decide that doing so is not worth the effort. In some cases, information itself begins to be filtered because people have learnt which parts of the story are easier for the leader to hear.

This is where emotional intelligence becomes relevant to organisational performance rather than remaining an individual development issue.

The question is not simply whether the leader manages their emotions well. It is whether their behaviour helps to create an environment in which good information, constructive challenge and sound judgement can continue to move through the organisation.

Emotional intelligence should not sit in a separate box labelled ‘soft skills’. Its consequences become especially visible when leaders are under pressure, entering unfamiliar roles, taking on broader mandates or leading through significant change.

These are precisely the moments when previously reliable ways of operating may become less reliable, while the consequences of poor judgement become greater.

Emotional intelligence develops through practice

I do not think emotional intelligence develops through theory alone. Much of the development comes from paying closer attention to our own patterns under pressure: what tends to trigger a stronger response, where assumptions enter our judgement, and how our behaviour affects the people around us.

That has certainly been true for me. Over time, I have become more deliberate about creating space between an initial reaction and the response that follows, particularly in situations where the stakes are high or the context is unclear.

The value is not in becoming unaffected by emotion. It is in recognising its influence early enough to respond with greater intention.

That is why I see emotional intelligence less as a fixed personal characteristic and more as a leadership discipline that continues to develop with experience, reflection and practice.

Sustainable leadership requires this kind of awareness

Leadership pressure is not going away. Senior leaders are being asked to make consequential decisions in environments that are becoming faster, less predictable and increasingly complex.

Technical capability, experience and strategic judgement remain essential, but none of them operates independently of the person exercising them. Leaders bring themselves into every decision, difficult conversation and interpretation of what is happening around them.

The aim is not to remove emotion from leadership. It is to understand its influence well enough that we retain choice over what we do next.

For me, that is where emotional intelligence earns its place in serious conversations about sustainable leadership.