Songfacts®:

• "Happiness" finds Little Mix singing about finding joy within. The feisty quartet address former lovers who betrayed them.
  
  Jesy Nelson kicks off the song by telling the dude:
  
  Dancing alone in the dark, shadows all over me
  You messed with my heart too long, that was a big mistake
  
  Jesy thought that without her romantic partner she'd never be content, but in reality he was making her miserable.
• A feisty Jade Thirwall belts out in the chorus that she has learned to love herself.
  
  I was searching for happiness
  I was using you to fill up my loneliness
  Realized from the moment I set you free
  I found the love, I found the love in me
  
  Having dumped the deceitful guy, Jade now sees she can be happy on her own and doesn't need anyone else.
  
  Jade continues to send cutting remarks to her ex in the second verse, warning him not to try for a reconciliation.
  
  Remember I, I was mine before I was yours
  So don't try, I'm stronger without you
  
  Jade won't go back to their relationship, which now she realizes was making her unhappy.
• Little Mix didn't contribute to the songwriting. It was penned by:
  
  Uzoechi Emenike (a.k.a. MNEK), who with Cottone co-produced Little Mix's "Touch" single. He also co-produced the Confetti track "Not A Pop Song."
  
  Camille Purcell, whose other Little Mix credits include Confetti's lead single, "Break Up Song."
• London-based TMS produced the track. The trio of Tom "Froe" Barnes, Ben Kohn and Peter "Merf" Kelleher have worked with Little Mix since their early hit singles "Wings" and "DNA."
• Little Mix's LM5 track "The Cure" contains a similar empowering message of finding joy within and was also written by Camille Purcell and TMS. In that song they declare:
  
  Now it's me and myself, yeah, yeah, yeah, don't need no one else
  This happiness was always inside me