I really don't think you need to be 40 and have three kids and have a body of an 18-year-old.

I am really bad at being a mom. I think it's hard for me to be a mom. I do my best. I am not the poster child for being a mother, I will say that. I wish I was.

Writing a novel, when it's all going well, it's wonderful. You're lost in the world, and you have a relationship with your own mind. Also, as a novelist, you don't have to yell at anyone. But being an executive producer of a TV show, all you have is people coming at you with questions, and you're making decisions, decisions, decisions.

If you're going to be married for a long time, I think you'll have a fair number of moments where you question things, no matter how good your marriage is.

Purpose has always been part of Unilever's DNA. Our founder, William Lever, built a business around the sale of Lifebuoy soap that was not only profitable and sustainable but also helped transform the health of the poor in Victorian Britain.

Tackling the environment should not be a licence to lecture people, because they have no excuse not to exercise, or eat their fruit and vegetables. Nannying - at least among adults - is likely to be counterproductive. Providing information is empowering; lecturing people is not. So, no excuses, no nannying.

I admire companies that give back to communities. It is an absolute essential for organizations to watch, mitigate, and improve their impact on the environment, people, communities, their health and overall well-being. But this is a necessary condition, not a sufficient condition.

It's the cross-training that's key. It doesn't let your body adapt to one stimulus too much and it keeps your workouts exciting.