Songfacts®:

• Beth Cosentino wrote this song about quitting drinking and finding domestic happiness in her walk-in closet. It enabled her to overcome writer's block and a deep depression.
  
  The Best Coast singer explained to Apple Music that one day she determined to "go sit in my closet and I'm just going to try to write this song and see what happens." She remembers coming up with "Everything Has Changed" and thinking, "Oh, wait. I really like this. I feel like I have something here."
• Cosentino wrote the song 14 months before she finally took action, addressed her demons and quit alcohol. "I was writing about this life that I didn't yet have, but a life that seemed within reach if I could get there," she explained. "Then slowly, over time, I got my mojo back."
• Cosentino told the New York Times that her rhyming of "lazy crazy baby" on "Everything Has Changed" is a wink to her critics who have dismissed her songwriting as repetitive.
• The Ryan Baxley-directed quiz show-themed video stars Cosentino as a game show host taking her anger out on the contestants. The clip features the stars of US TV show Vanderpump Rules. Cosentino explained to American Songwriter: "When I wrote that song, I was watching a lot of Vanderpump Rules. I binged it and I was going through some hard stuff and that show really helped me get out of my head. So when was coming up for a concept for the music video, I was like, 'Oh, that'd be funny if I could get them to be in the music video for this song.'"
  
  The Best Coast singer added that Katie Maloney and Ariana Madix, her pals from the show, agreed straight away to feature in the visual.
• "Everything Has Changed" was Best Coast's first single to reach a Billboard chart. It peaked at #18 on Adult Alternative Airplay in 2020.