Somewhere between sneaking out for smoke breaks, downing cokes all day, hooking up with a wannabe rocker, and groping a different guy in the bushes after playing tennis, Britney found time to focus on her sobriety and is supposedly ready to get her life back. She’s said to be doing great and amazing:

TMZ has learned Britney Spears will be leaving rehab this week, and she has made one of the most amazing turnarounds in celebrity memory.

Sources say Britney and soon-to-be ex Kevin Federline had an “amazing meeting” on Sunday. They are not only getting along, they are hammering out the terms of custody. We’re told when Britney gets out, she and Kevin have agreed to a 50/50 split with physical custody of their two children. The plan is for Britney to eventually gain primary custody and Kevin will have visitation.

Jamie Lynn, Britney’s sister, and Brit’s mom, Lynne, have been at Kevin’s house helping with the kids while Britney has been getting her own help in rehab. And that help is working. We’re told she has literally turned her life around. Stay tuned.

This is the girl who had us all saying hallalujah after she cleaned up and ditched K-Fed, but was quick to squander the public’s goodwill by hooking up with Paris Hilton and boozing every night. Her life can turn on a dime. I hope this sticks for her, but I’m incredulous. She stiill has to make it on the outside.

Britney’s aunt is quoted as recently saying that she needs to get home to Louisiana and breathe some fresh air.

Britney is said to have squandered much of her fortune, going through $21 million of her $32 million in the past two years. Her expenses are high and people speculate that she could be on the verge of bankruptcy.

Header image is from the night of Britney’s send off fourth crotch flash during the last week in November last year. Thanks to Celebrity Puke.