generalRob Law: How I defied the doctors - and Dragon's DenBorn with cystic fibrosis, Rob Law lost his sister to the disease, was told heâd die young and never have kids and had his business idea dismissed as worthless on Dragonâs Den. Having just launched his memoir, he tells Helen OâCallaghan about defying the odds, following his passion and keeping fighting when the experts were telling him to quit.