Like most meaningful activities, campaigns are team games.

I want to write more books, see my first novel made into a film, fight more campaigns, work in more countries. I want to be able to recall experiences that have endured for their pleasure and range and intensity.

I hold no candle for George Osborne whatsoever. He has no strategic skills, is a hopeless chancellor, has no idea how most people have to live and his policies are failing and hurting millions.

My aunty says I'm the double of my father. He was a workaholic, which I've definitely inherited. And like me, he could be the life and soul of the party, but also quite withdrawn.

So here is one of my theories on happiness: we cannot know if we have lived a truly happy life until the very end. This view of life and death was reinforced by my close witnessing of the buildup to the death of Philip Gould. Philip was without doubt my closest friend in politics. When he died, I felt like I had lost a limb.

In an ideal world, it would not take a film star to get the media focused on mental illness.