Justin Bieber learns from mistakes

Pop Justin Bieber feels he needed to learn from his own mistakes.

The "Believe" hitmaker - who had a troubled 2014 which saw him arrested for reckless driving, criticised for his wild partying and embroiled in legal problems for egging a neighbour's house - said he needed to make a "conscious effort" to change because he wasn't "ready" to amend his behaviour.

"You have to make the conscious effort, because for me, so many times it was good people coming in my life and tugging at me, but I wasn't ready.

"They're like, 'Justin, come on.' But I wasn't ready to take that leap and be like, 'OK, this is what I want to change, this is who I am, and this is not who I am'. It takes moments of clarity to be like, 'Oh, that's why I'm not like this. That's why I shouldn't do this'," he said.