Justin Bieber: I'll Never Be an Addict

History is rife with child actors and teen idol musicians who fell into drug and alcohol abuse in their adult years, but newly legal Justin Bieber insists that he will be an exception to the rule. During a recent sit-down with Oprah Winfrey, the popster explained that he uses exercise and a self-imposed weekly day off to ward off potentially destructive impulses. "[Some people are waiting for me to] mess up because a lot of teen stars do. They make that mistake of getting into drugs or alcohol," he says. "Just remembering what's important [curbs any self-destructive tendencies]. I have to remember to take time for myself to talk to people about what I'm going through, about what's in my head." Not that the "Never Say Never" singer has been entirely immune to the pressures of stardom: he admits that he's "nuts" and suffers from insomnia and periodic depression. "You just feel sometimes you need someone to be there with you," he says. "Some days you have pain in your heart because maybe you haven’t dealt with that. Some days you’re depressed and you don’t know why because you haven’t dealt with it." The singer has encountered addiction in his personal life. His mother, Patti Mallette, divulged earlier this year that she suffered from alcohol and drug addiction as a teen after enduring childhood sexual abuse. She even attempted suicide before getting clean at the age of 17, when she found out she was pregnant with Bieber.