The 34-year-old singer - real name Annie Clark - has opened up about her own struggle with anxiety, and said used to feel uncomfortable being around other people, reported Contactmusic.
"My uncle gave me advice when I was probably 15 and I was also very, very shy, and very anxious, and would have to make sure I knew where all the exits were if I was in any kind of public space, and was very uncomfortable talking to people," she said.
"...And I think one thing that really helped me was to know that - and it sounds like not quite a good thing, but that no one's looking at you and no one cares because everyone is obsessed with themselves.