Britney Spears poses backstage following the Baby Phat 2007 Fall collection during New York Fashion Week February 2, 2007.[Reuters]

Britney Spears will be leaving rehab this week, according to reports.

The troubled pop star checked into the Promises treatment center in Malibu, California, last month, and now counselors claim she's ready to take on the world again after battling her substance-abuse demons.

Sources tell TMZ.com the rehab stay has helped the pop star get a grip on her life.

One claims she had an "amazing meeting" with her estranged husband, Kevin Federline, over the weekend, and has promised to deal with their custody issues over sons Sean Preston and Jayden James amicably.

According to the Web site, Spears and Federline have agreed to an even split of physical custody, while the pop star will gain primary custody of her kids when she's back on her feet--and that will be sooner rather than later.

One insider says, "Britney has literally turned her life around."