Mariah Carey can`t sleep when she`s working

Washington: Mariah Carey, who has just released her latest studio album, `Me, I Am Mariah... The Elusive Chanteuse`, revealed that she can`t sleep when working and finds it hard to relax when she is recording a new album.

The 44-year-old singer reportedly said that she was such an achiever that it was difficult for her to relax and let herself get some sleep.

The American singer said that she was very hard on herself and one did not want to be here all day around her, because it was hard work.