The 38-year-old said he feels everything has changed since the birth of his daughter Theodora, reported Digital Spy.
"I really do love it. I was worried before she came - I'd been a pop star since the age of 16 and I'd never done anything for myself and then all of a sudden I was being asked to take care of this life.
"I thought I might be this selfish person but you just melt. The baby came out and everything changed, cosmically, spiritually, life, everything. I'm a new parent and I've still got that euphoria," he said.
The 38-year-old's wife Ayda Field gave birth to Theodora Rose Williams on September 18.
The singer also discussed the thought process behind the name Theodora, saying that he wanted to avoid ridiculous names associated with celebrity babies.
"We wanted to call her Teddy but that's bordering on celebrity nonsense and we thought what if she doesn't go into showbiz and needs a professional name, so Theodora is her professional name and Teddy is the name she goes by at home."