The only thing worse than reaching the lowest depths of ruination and despair is realizing that you've done so. And it looks like Amy Winehouse had that moment of pitiable clarity late last week after another performance gone awry.

"This isn't a life," the substance-dependent, alarmingly withered and talent-wasting singer tearfully acknowledged to the London Daily Mirror. "I'm a mess. Look at me."

Amy grabs a drink in between songs at a performance in Essex, England, last month.

Winehouse, 25, reportedly came to this painfully obvious if heartbreaking conclusion at a London charity concert, where she was singing backup for her 12-year-old goddaughter Dionne Bromfield, who, scarily enough, she's trying to mentor.

"When I look at Dionne she reminds me of myself," she told the paper. "I used to be this little girl who liked Celine Dion and singing, this beautiful sweet girl with innocent dreams."

But, "Look where I am now. Look what happened to my dreams," sighed Amy, who is still pining for her imprisoned and similarly screwed-up husband, Blake Fielder-Civil. "I can't believe what has happened to me. I am so sad."

That's the same reaction the crowd had as she attempted -- unsuccessfully, it seems -- to sing along with her adorable if stronger-parental-oversight-needing goddaughter during a short set of Motown tunes.

"It was tragic -- she seemed totally wasted," an eyewitness informs the London Daily Mail. "She was jumping all over Dionne as the poor girl tried to sing for the crowd. Amy didn't really sing a single note -- it sounded more like she was grunting down the mic."

Before the ever-more-haggard Winehouse arrived back at her Camden home in the early hours of the morning wearing only one shoe, she allegedly tried to headbutt a photographer and supposedly socked a woman in the eye who asked to take a photo with her.

Police are investigating the latter incident.

And unlike Britney Spears, who fortunately had her father, Jamie, to step in and take control when she hit a place about four layers below rock bottom, Winehouse's dad appears to have other things on his plate, like capitalizing on his long-past-intervention-needing daughter's fame.

The London Sun says onetime cab driver Mitch Winehouse made his singing debut over the weekend by warbling a bunch of Frank Sinatra tunes for an appreciative crowd of 300 people, whose entertainment options were apparently limited.

As for Amy's friends, they are sticking close, although their hovering appears to be more of a stopgap than an actual attempt at help.

"No one wants to leave Amy on her own -- she's in a very fragile state at the moment," a source tells the Sun. "Her most loyal friends are terrified she is going to do something which she can't overcome. She's been to hell and back already but some fear she's going to get worse before she gets better."