Win or LearnThe man behind the success of Conor McGregor Growing up in Dublin, John Kavanagh was a skinny kid who was frequently bullied. After suffering a bad beating when he intervened to help a man who was being attacked, he decided he had to learn to defend himself. Before long, he was training fighters in a tiny shed, and promoting the earliest mixed martial arts events in Ireland. And then, a cocky young lad called Conor McGregor walked into his gym In Win