It's not hard to understand Kieran Behan's ecstatic disbelief at making the 2012 Olympics, becoming only the second Irish gymnast in history to qualify.
"I kept myself awake yesterday because I didn't want to wake up and it not be true," he says. "It's so, so surreal."
There'll be plenty of stories of triumph over adversity at London 2012, but I'm prepared to bet that there won't be many more inspiring.
When Behan was just 10, a non-cancerous tumour was discovered in his left leg. The operation to remove it went wrong and he was left in a wheelchair with severe nerve damage. His parents were told he might never walk again, let alone do gymnastics.