The singer, who released her new single 'Do Wah Doo' this week, said that she is reminded of the experience when she listens to singer-songwriter Regina Spektor.
In an interview with The Times, she said: "I feel like crying when I hear [Regina Spektor]. When I had my proper breakdown on tour, the one time I really thought, 'Oh, I've actually lost it now, I'm gonna be mental for ever,' I listened to her."
The 22-year-old admitted the breakdown happened in Germany following a six-week American tour and a run of British festival dates.
She explained: "[I was] just drinking beer all day and getting f**ked in the head. Punters were coming in to the festival [and] I was like, bleeurgh, 'Hi, see you at three o'clock, yeah, I'm on the main stage...'"
Nash went on to say that the experience informed one of the songs on her new LP, called 'Mansion Song'.
Kate Nash releases her new album My Best Friend is You on April 19.