Sinead O’Connor has confirmed her retirement from the music industry, weeks after making similar claims and later retracting them.The Irish singer said on social media that she had been in “two minds” about retiring, but confirmed that she will now begin a new career as a writer.“This is to announce that having been in two minds about retiring I have now, in consultation with my medical team, and on their advice, decided to go ahead and retire so that I may now focus on my new career as a