Justin Bieber is vexed by people who write him off as nothing more than a teen pop idol.

The 18-year-old Canadian superstar is preparing for the release of his second book Just Getting Started.

In an interview with Ryan Seacrest that will air Thursday, Justin dishes on why he decided to get so personal in this tome.

"I feel like I just don't want to be another teen heartthrob," he revealed.

"I just think  that just annoys me. To think that's what people will will think of me or, like, I just want to prove people wrong."

Justin also offers fans intimate insight into his childhood.

Raised by a single mother, the singer speaks about how much he honours his mom for all the sacrifices she made.

"There were so many struggles that she had to go through to be able to raise me, as an 18-year-old girl," he explained.

"You know, so I couldn't imagine raising a child now. So I give my mom you know, kudos to you, Mom... because I was not easy."

Just Getting Started will hit bookshelves September 13.