Heather Graham would rather sleep than work.

The 40-year-old actress insists that she never worries if she has few movie projects lined up because it makes her happier if she is able to relax and spend time with her loved ones.

She said: "I definitely like not working sometimes. It's so fun. I just love sleeping in. In America, everyone is driven to succeed and wake up and do something. But I don't care. I want to sleep in. I want to relax. I don't want to have to get up everyday.

"It's funny. The longer I have been in the business, the more I realised how important it is to have other things in my life. Have normal, healthy people around me, not focusing on the business all the time, not always going to see every movie. just being really happy. I've been evaluating how much I value happiness in my life. To be too driven takes away your happiness."

Despite admitting she doesn't focus all her attentions on work, the 'Hangover' star insists she doesn't think she will ever retire because she feels destined to continue with her career.

She added to The Scotsman website: "I have a lot of persistence and determination. It's just a feeling that this is what I'm supposed to be doing. I just feel like I have a desire to do this, and it feels like it's beyond my control, so I have to keep doing it.

"You do make choices, but in another way I feel like it's your fate and your destiny, what happens to you."