The Take That star spoke to The Sun just after he performed the Dublin leg of his solo Take the Crown world tour, and credited his wife Ayda and baby daughter Theodora with his renewed zest for life.
After his well-documented battles with alcohol and drug problems in the past, Robbie told the paper that these days, he is 'just so content and so happy thanks to my wife and thanks to my daughter'.
The doting dad - who dedicated the track 'Come Undone' to his baby daughter, Theodora Rose - said that nothing matters to him now more than his family.
"I am honestly the happiest I've ever been. Being a dad, having a daughter, it's just the most important thing in the world to me," he said. "It has changed my life and that's not being dramatic, that's the way it is. Suddenly it all makes sense."
Robbie and his wife Ayda welcomed little Theodora Rose into the world last September.