If you’re wondering what was going through Britney Spears’ head during her erratic era, you are not alone - so does she. “I sit there and I look back and I’m like, ’I’m a smart person. What the hell was I thinking?’”

Britney Spears stands backstage with her three awards for best pop video, video of the year and best female video for “Piece of Me” at the 2008 MTV Video Music Awards in Los Angeles Sept. 7, 2008. (Photo: chinadaily.com.cn/Agenices)

She’s got a lot to talk about: In that time span, she has gotten divorced, been through a custody battle, gone to rehab, had very public meltdowns and had one memorably bad performance at the MTV Video Music Awards.

Now on the comeback trail, Spears is releasing her sixth album, “Circus,” on Dec. 2, her 27th birthday.

Spears says she’s hoping this TV special will “set the record straight” about her life.

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