ET has the all-new look inside the Britney Spears documentary where the songstress opens up about how she uses her art as a way to deal with hurdles in her life.

In the 90-minute exclusive film, called "Britney Spears: For The Record," she says, "Everybody has a world that they create around themselves. If I have a lot of nervous energy, when I start dancing it all goes away and I just feel emotion. It's like a roller coaster."

She says while some people may use a shrink, she uses the dance floor.

"People think that when you go through something in your life you need to go to therapy, but for me art is therapy because it's like you're expressing yourself in such a spiritual way," she says. "Sometimes you don't need to use words to go through what you need to go through. Sometimes it's an emotion you need to feel when you dance that you need to touch on and the only thing that can touch it is when you move a certain way."

The in-depth film, airing November 30 on MTV, follows Britney over three months and no topic was off limits -- including her music, career and hopes for the future.

Meanwhile, Britney's sixth studio album, Circus, hits stores on December 2.