Justin Bieber's mother thinks he would be in a "lot of trouble" if he wasn't a pop star.

The 16-year-old singer's mum Pattie Mallette often goes out on the road with the 'Baby'hitmaker and believes the structure and routine his career gives him means he can't give into temptations.

His manager Scooter Braun said: "I think his mother - she and I have talked about this - at times, she struggles with how protective we have to be of him.

"But I also think, and she's said this in interviews, that she feels safer with him living this life because it's structured and we know where he is all the time. She feels that if they were still in Stratford, Ont., he'd be getting himself into a lot of trouble."

Though Justin's mother is pleased about the structure life on the road gives her son, Scooter believes it is harder for the singer's father Jeremy - who is no longer in a relationship with Patti - because he doesn't get to see him so much.

Scooter told Hollywood Reporter: "His dad is in Canada and his mom is with us most of the time. I think his dad misses him a lot because he doesn't get to see Justin as much."

Justin is determined to make a lasting success of his career and in order to achieve his ambitions, the teenager spends time studying fallen idols to give him an idea of what pitfalls to avoid.

Scooter added: "Justin doesn't study the people who made it. He studies the people who haven't.

"The general feeling we get is that it had nothing to do with their talent and everything to do with their personal life. Like the kids who fall into drugs and destroy their own trajectory. I think by watching that, he's very conscious of it.

"He realises that if he grows up to be a good man, he's going to be able to handle the pressures that come with a position like this."