asked Armstrong if he got stressed when writing, trying to keep up the momentum. The Green Day frontman replied: "I love the moments of inspiration, when you feel pretty good about yourself and things are okay. It's the s--t in between, when you're blocked - you have a melody in your head and no words for it. It drives you f--king crazy." Armstrong added that he had the melody to this song, "for a year. I had nothing to write about. I would be sitting there: 'I feel stupid.' 'Little Girl
' and '21 Guns
' were the same way. But you have to stick with it. It's the patience that drives you crazy. But the moments when you nail something - that's when you're most free. There is no outside stress. You're just in the zone."