Britney Spears

Toxic singer Britney Spears' comeback is very bitter sweet to her, because the star feels "no excitement, no passion" for singing after her infamous breakdown. The star was hospitalized twice this year and lost custody of her sons, Sean Preston, 3, and 2-year-old Jayden James, after a series of public meltdowns, including a headline-grabbing incident when she shaved her head in front of the worldwide media. Speaking in new MTV documentary, "Britney: For The Record," the singer says, "I have really good days, and then I have bad days. Even when you go to jail you know there's the time when you're gonna get out. "But in this situation, it's never ending. It's just like Groundhog Day every day."She continues, "I think it's too in control. If I wasn't under the restraints I'm under, I'd feel so liberated. When I tell them the way I feel, it's like they hear but they're really not listening."She adds, "If you do something wrong in your work, you can move on, but I'm having to pay for a long time. I never wanted to become one of those prisoner people. I always wanted to feel free."And even though her "weird" life is all she's known, Spears didn't realize how famous she was until her breakdown. She adds: "I think I've learnt my lesson now and enough is enough."