Britney Spears is set to reveal more about her ordeal for the past three years in the upcoming documentary tentatively titled "For the Record," which is produced in partnership with MTV.
In the teaser video, Spears revealed that she's been lonely due to massive media coverage on her life and that she regretted having done those outrageous stunts.
"I sit there and I'll look back and I'm like: I'm a smart person. What the hell was I thinking?" she said.
The documentary will be aired on MTV on November 30. Her new album, "Circus" will be released on December 2.