Tom Chaplin believes his addiction problems stem from the same ''devil'' that allow him to be a good frontman.
The Keane singer spent five weeks receiving treatment for drug and alcohol addiction in 2006 and admits he had had problems for a long time as he was no longer able to keep himself in control.
He said: ''In truth, my problems were there for a long time. It's the devil inside - the same thing that enables you to go onstage and be an extrovert singer. If you use it the right way, it's a good thing.
''If you let it get the better of you, as I did, it becomes a monster you can't control.''
The 'Everybody's Changing' hitmaker admits he still ''Battles'' against his natural shyness to make it out on stage but credits the support of wife Natalie for helping him stay comfortable and grounded.
He added in an interview with the Daily Mail newspaper: ''I still have a terrible battle between the person onstage, who sings these emotional songs, and the person who wants to go home and hide. I struggle to find the middle ground.
''My wife is great, though. We met before the band took off, so she isn't swept up by the supposed glamour of the music business. She loves coming to gigs, but she's very down to earth.''