Singer Robbie Williams says it is scary being a father and he sometimes fears he isn't up to the task.
The 'Angels' singer admitted he worries about doing a good job of raising his 13-month-old daughter Theodora with actress wife Ayda Field.
The singer claims his latest track 'Go Gentle' was written as life-long vow to look after his child as best he can, reported Contactmusic.
"Go Gentle' is a promise I'm making to my daughter. It was written when she first arrived on the planet and I'd been a selfish pop star for most of my life and then all of a sudden I've been asked to take care of this whole person.
"I still am scared that I'm not up to the task! I'm doing a good job of being dad but it's scary, you have to look afterthis person for the whole of their life, I'm not very good at even looking after me," Williams said.
The 39-year-old pop star also admitted he often becomes envious of other singer's of his age.
"Anyone that's my age and doing my job, I invariably don't like them because I'm competitive and jealous and petty but with Michael it's different. He's the link to a glamorous past that I wish I'd have been part of. He's the pro's pro I love him to bits."