Bieber: 'Some people want me to fail'

Justin Bieber wants to be a "good role model".

The 'Beauty and a Beat' singer - who is currently being investigated for alleged battery against his neighbour in Calabasas, California and attracted controversy during his European tour earlier this month after threatening a photographer, collapsing on stage and being two hours late in London - admits he has had a tough time recently and is upset about the idea of disappointing his fans.