Madonna: I'm a bad mother

Madonna has confessed she is a "crap mother" who struggles to balance her career and family life.

The star said she found it difficult to juggle the needs of her children - Lourdes, nine, and five-year-old Rocco - with work commitments.

"I'm always going 'Oh my God, I'm a crap mother'. I want to get home and put my kids to bed and then sometimes, if I'm spending a lot of time with my children, I think 'Oh God, I just want to be an artist,' " she said in a TV interview.

The 47-year-old - recently reported to have problems in her five-year marriage to film director Guy Ritchie, 10 years her junior - added that Lourdes often gets embarrassed by her mother's fame.

"Sometimes she doesn't want to come to certain things because she knows everyone is going to pay attention to me," she said.