Certainly I'm passionate and driven and quite relentless when I want something.

When I'm at the greatest odds with my body, it's usually because I feel my body's betraying me, whether that's been in the past, struggling with my weight and feeling that I couldn't eat what I wanted to eat, or that I couldn't get my body to do what I wanted it to do.

Success has to be an inside job. Happiness does not come from external material things. Even people don't make us ultimately happy. It's how we choose to deal with those things that happen in our lives that matters.

Despite what anti-aging ads say, growing older can be better. I feel better in my skin, 100 percent. You have greater effects of gravity, but the better sense of yourself you have is something I wouldn't trade. Women who lie about their age - 'why?'

I just don't like the idea of having an operation to hold up the ageing process.

At its core Twitter is about sharing, and I think that in life we never feel better or more energized than when we're giving to someone else.

I'm an incurable optimist and a go-getter - it's in my nature to focus much more on what makes me happy than what makes me nervous.