Every parent has been there. The sleepless nights, vomiting babies, crappy nappies and the urge to pull your own hair out in frustration.
Babies don't play by the rules.
Jacinda Ardern and Clarke Gayford's daughter Neve might be the "first baby" of New Zealand, but she appears no different.
So when Gayford was up at 4am trying to get Neve to nod off, he took to Twitter to share how much precision there is in putting a baby to sleep.
And the result is a sense of achievement and relief shared by every parent on the planet.