I mean, I still work alone. Really — I work alone in my house, often in my bathrobe. When a photographer shows up, I dress up, so I have clothes on. And that's how I've always worked.

I call it “stolen time”—there’s nothing more valuable than stolen time. It happens to me sometimes when I’ve set up a meeting at my studio at a certain time and it gets cancelled on short notice. When it happens, I’m like a giddy child. I think, “Wow, I’ve stolen half an hour. It’s so exciting—I can do whatever I want!”

Keeping all devices aside 1 hour before sleep, stopping all work chats at Zerodha unless critical after 6pm, and spending time doing what is most relaxing just before sleep (spending time with my son & hobbies) and on weekends has helped me the most with sleep.

The great singer Um Kulthum (actually named Kawkab Elsharq – a superstar of the East) had a major influence on my appreciation of music. On the first Thursday of each month we listened to Um Kulthum's concert – "waslats" (three songs) – for more than three hours. During all of my study years in Egypt, the music of this unique figure gave me a special happiness, and her voice was often in the background while I was studying mathematics, chemistry… etc. After three decades I still have the same feeling and passion for her music.

Don’t write in public places. In the early 1990s I went to live in Paris. The usual writerly reasons: back then, if you were caught writing in a pub in England, you could get your head kicked in, whereas in Paris, dans les cafés . . . Since then I’ve developed an aversion to writing in public. I now think it should be done only in private, like any other lavatorial activity.

D.H. Lawrence wrote several complete versions of Sons And Lovers and The Rainbow and Women in Love . I think that thing of having to begin again maybe enables you to reconceive things, completely reconceive, in a way that’s more difficult now. Now it’s just a kind of constant tampering.