Olympian and two-time European indoor champion David Gillick speaks to Marie Crowe about dealing with Olympic disappointment, the importance of sports psychology and life after sport.

We Become Heroes: Former Lion Sean O'Brien on Gaelic football passion and living with pain

How do sportspeople develop into elite athletes? Each week RTÉ Sport’s Marie Crowe speaks to a sporting icon, tracing their journey from childhood in the hope of finding out how they became heroes.