In an forthcoming documentary, Britney Spears openly talks about her loneliness and her regrets about her much-publicized erratic behavior.
"I sit there and I'll look back and I'm like: I'm a smart person. What the hell was I thinking?" the pop star says in the 90-minute film, tentatively titled For the Record, produced in partnership with MTV as mentioned by PEOPLE. The 26-year-old Spears talks about her turbulent past: her divorce from Kevin Federline, forced psychiatric hospitalizations and loss of custody of her two sons. "I've been through a lot in the past two or three years, and there's a lot that people don't know," she says.