Britney Spears' life as a mother and a celebrity has proven to be something of a delicate line to walk.As the singer's private life and publicly tumultuous rise to fame have been in the spotlight in recent months due to the recent documentary , the songstress has been trying to spend more time with her kids, a source tells ET.«Britney loves her boys and misses them every day she doesn't see them,» the source says.