If my writing comes to a halt, I head to the shops: I find them very inspirational. And if I get into real trouble with my plot, I go out for a pizza with my husband.

I'm very lucky. I have a really supportive husband in Henry, and there's my mum, too. I couldn't have a career and manage the kids' routines and household thing single-handedly. I'd just go crazy.

My real name is Madeleine Wickham, under which I write dramas with an edge of humour. As Sophie Kinsella it's fast, all-out comedies, such as the 'Shopaholic' series.

Shopping with friends is a great way of still enjoying the thrill of the chase without having to make a purchase. It can also be a real bonding opportunity. Helping your friend find something nice is just as rewarding as helping yourself.

We’re on this planet for too short a time. And at the end of the day, what’s more important? Knowing that a few meaningless figures balanced—or knowing that you were the person you wanted to be?

When I'm on a break from writing, I'll log on to Amazon and eBay. The doorbell is constantly being rung by deliverymen.