Songfacts®:

• The Darkness frontman Justin Hawkins said, "'Happiness' is about seeing only the golden sand and overlooking the broken glass. Hearing the waves crash and filtering out the grotesque cries of mating gulls. Smelling the distant odour of fresh chips and ignoring the stench of nearby dog s--t. Happiness is a choice."
• The song's music video was created by Vitamin Pictures in Chicago, Illinois and was directed by Daniel DelPurgatorio.
• Justin Hawkins considers to be a controversial choice for the Pinewood Smile album. He explained to Rocker.sk:
  
  "It's one of those songs where we all looked at each other and said, 'Uh-oh - we shouldn't be doing this, because it's going to be a single.' It doesn't really represent the band - it doesn't sound like us. It's a bit like Blur's 'Song 2'. The label immediately said, 'Oh, that's the single,' and we didn't even want it on the album. We saw it as a bonus track, really."