The 30-year-old Florence and the Machine star said she is quite reserved in real life and used alcohol as a crutch when she first found fame, reported Femalefirst.
"Hedonism was like a disguise. I was a shy kid and I had to alter my personality. At first it's freeing but then it becomes a prison of its own making. I thought you needed a hangover to write," she said.
Florence also said she has always found it easier to pour out her feelings in songs rather than express them by talking to people.