Submitted: Jul 23, 2008 - After successfully completing four weeks of treatment for anxiety and depression, Heather Locklear is back home. "Heather's feeling really great," says a close friend. "And she looks beautiful, just radiant." While the actress's recovery is "a work in progress," Locklear seems rejuvenated by her month away, says the friend. "She told a really funny story and she laughed from her core," says the…