London: Pop diva Madonna says she feels her ‘head is going to explode’ from the stress of being a single mother of four children ever since she divorced filmmaker Guy Ritchie.

The 53-year-old singer married Ritchie in an exclusive ceremony in Scotland in 2000 and filed for divorce citing irreconcilable differences, which was finalized in December 2008, The Sun online reported.

"I'm not going to lie — it's hard work having four kids and doing all the work I do.

"Everybody has something to say about the way I live my life. At the end of the day I'm doing my best. If people don't like it, then that's really their problem. Sometimes I cope with it very well, sometimes it's a struggle," she said.

The star has used her experiences as a lone parent as an inspiration for some of the tracks on her forthcoming album, 'MDNA'.

"It's about the life of a single mother. It's a challenge juggling everything — multi-tasking is my middle name. I try to express that."