Keith Cullen: 'I’m lucky to be alive. I was changed forever after my cancer diagnosis'

Keith Cullen: 'I’m lucky to be alive. I was changed forever after my cancer diagnosis'

Irish artist, entrepreneur and holistic practitioner Keith Cullen tells Helen O’Callaghan about the major turning point that eventually forced him to reassess many of the things he’d spent years working towards – and to question what success actually meant to him