About Ilias Elsdon-Rentoulis, MBA

Founder of Improve to Succeed Coaching

For years, I worked in emergency medical care — where every second mattered, and every decision could mean the difference between life and death. In those high-stakes moments, I learned how pressure reveals not only performance, but identity.

Curious about what drives top-level execution, I studied advanced modules in Human Factors, understanding what separates average from exceptional in critical environments.

From there, I earned an MBA, and transitioned into senior leadership roles — leading high-performing teams, solving complex challenges, and climbing fast. In just 7 years, I was promoted five times, eventually becoming the Head of Improvement for a major organisation — embedding scientific principles of performance, behavioural psychology, and continuous improvement into every team I led.

But something bigger was calling.

After coaching clinicians, executives, Olympic-level athletes and high-performers across industries, I chose to focus on what I do best:

Helping ambitious leaders become unmissable.

I launched Improve to Succeed to serve the type of leader I know deeply — smart, driven, but held back by self-doubt, fear of failure, or imposter syndrome. The kind of leader who’s already good… but knows they’re capable of more.

Through tailored coaching and our signature IMPACT Model, I help you unlock the confidence, clarity and presence you need to become the leader everyone wants and trusts.

This work is personal. And it’s powerful.

If you're ready to break through what’s holding you back — and finally lead with the presence and certainty you know you're capable of — this is for you.