Mariah Carey finds it difficult to sleep when she's making music.

The 44-year-old singer has just released her latest studio record, 'Me. I Am Mariah... The Elusive Chanteuse', and she claims she is so heavily involved in the entire album creation process she has a hard time switching off from work mode.

She said: ''I'm very proud of what I've achieved so far, but clearly I'm not one to sit back and do nothing. I always look ahead. I want to continue trying to make music that inspires people.

''I'm such an achiever that it's difficult for me to relax and let myself get some sleep. I'm very hard on myself, actually. Believe me, you don't want to be here all day around me, because it's hard work.''

The '#Beautiful' hitmaker also opened up about the 'diva' label which often follows her, insisting she is only harsh on herself and not those around her.

Mariah explained to Britain's HELLO! magazine: ''My mother, an opera singer, used to use the term as a compliment - it meant a very talented singer. I looked it up in the dictionary recently and now it also means a difficult and demanding woman. But I'm only demanding on myself. In other ways I'm pretty down-to-earth.

''For instance, I'm grateful for my career, I value my friendships and I'm loyal. All my friends know MC keeps her word - and I never divulge secrets.''