Studies show that women seeking power tend to be punished for doing so, because it goes against cultural bias. Women are expected to be likeable and pliant. We are also trained to expect any success we attain to come to us through men - by pleasing men, as good employees, good partners.

Writing a book is like running a marathon. You need to be fit to do it, mentally and, as far as possible, physically.

We are all impacted by the failings of a news media that almost always chooses which stories to cover according to the priorities and perspectives of white men with private educations.

Take on jobs, projects and challenges that frighten you. It's the best way to get rid of fear.

Iceland's Women's Day Off in 1975 saw 90% of Icelandic women take time off from their paid and unpaid work, an experience that not only showed women how much they contribute but turned Icelandic men into supporters of gender equality. I aim to achieve the same impact in the UK.

One of the reasons I'm able to write books and still carry on with other work is that I do my best writing between 5am and midday.

Our male-dominated culture tends to define success in terms of wealth, fame, power, the reaction of others. Women are fed a version that includes personal fulfilment through marriage and motherhood in addition to professional acclaim and of course we must look sexy but not too sexy and then graciously disappear when we hit middle age.