Dolly Parton's new year's resolutions only last ''a couple of weeks''.

The '9 to 5' hitmaker has stopped making promises to change certain aspects of her behaviour with the turning of the year because she knows she won't stick to them.

She said: ''It's always the same thing, I'm gonna exercise more this year, I'm gonna eat better.

''And that lasts for a couple of weeks and then I'm right back where I started. So I don't make 'em cos I always break 'em.''

The 68-year-old singer has no intention of retiring anytime soon and thinks the secret to staying fit and healthy enough to continue her career is sleeping in short bursts.

She added: ''I like being busy and I get energised by doing everything. This is what I've always wanted to do and creativity is a great energy.

''I only sleep for three hours at a time before I get up and do other stuff. Then I cat nap.

''Wherever I am, whatever I'm doing, I take a quick nap. I think that's one of the reasons I stay more energetic. But I really don't think about my age. If my health holds up, I'll still be doing this at 95 if I live that long.''