The 17-year-old singer-and-actress - who appeared in her first commercial when she was just three years old - believes she has learned more about herself and her career as she has got older.
She said: "You get more insight as you get older, on everything.
"I kind of woke up one morning and was like, `Oh I see what`s happening, I get everything.`
"I woke up and was like, `I get it, I`m a product.` "
The Pretty Reckless singer - who achieved widespread fame aged 14 after starring in US drama series `Gossip Girl` - wasn`t prepared for fame but insists she doesn`t worry about living her life in the spotlight or what other people think of her.
She added: "Fame just kind of happens overnight. No one prepares you for it. On `Gossip Girl`, I was just going to work, doing what I`ve always done, and then all of a sudden you`re like, `Woah!`
"But you get used to it. You ignore it - because whatever people say about me doesn`t bother me at all. If you`re in high school or college or at work, someone`s not going to like you. It`s inevitable. But it doesn`t mean anything."