Chris Martin has to ''work really hard'' not to ''be a d**k''.

The Coldplay singer admits it can be difficult being an arena rock frontman as ''only about 20 other people do'' it, and he has relied heavily on ''key peers'' Bono and Mickael Stipe, from U2 and R.E.M. respectively for advice over the years.

He added: ''It does something to your brain which is odd... you have to work really hard not to be a real d**k''.

The 'Magic' hitmaker - who split from wife Gwyneth Paltrow last month after 10 years of marriage - doesn't think he is a great lyricist but uses his songwriting as a ''diary''.

Speaking to BBC Radio 1 DJ Zayn Lowe, he said: ''I write music as a diary. I'm never going to be as adept lyrically as Jay Z or Morrissey.''

And Chris also insisted he doesn't care what anyone thinks of Coldplay's new album 'Ghost Stories'.

He said: ''I don't really mind what anyone says about this album because it's just the truth. It's as true as my nose. Some people have a real problem with my nose, but what can I do?!''