The singer is due to begin his 'Believe' world tour later this month and wants to take his career to the "next level" and silence any of his critics.
He told USA Today: "I don't want to be just another teen heartthrob. I know some people are waiting for me to fail, thinking, 'Oh, his time's up'.
"Well, I like being the underdog, and this tour is my chance to take things to the next level.
"I've never put in more hours preparing, because I want [the tour] to be perfect. I want it to be an event.
"I'm with a personal trainer every day. I'm rehearsing every day. I want people to see this tour and go, 'Wow, that was something I didn't expect'."
The young star has been watching footage of Michael Jackson in preparation for his gigs.
He added: "I've been watching videos of his concert tours over and over, he's my inspiration."
Watch the video for Justin Bieber's 'As Long As You Love Me' below: