Carine Roitfeld musing on the secret of her success in an article on The Times' website...

“I’ve been with the same person for more than 25 years, my kids are working and not totally crazy, my skirts are not too short, and though I am very serious, I try not to take myself seriously. If there is a secret to me, this is the trick.”

Remove the part about children (I am not, and will never be, a progenitor) and I think she may be onto something...