Where I write depends on various factors. The place I do most of my writing is my beautiful attic office at home. There are two things about this that I especially love. The first is the view: I have a window seat on both sides of the room, and each one has a different view of the sea. My favourite time to work is early in the morning, and my favourite view is the sunrise. Luckily, the house faces the right way for me to see the sunrise from my window. (Which is why I don't really mind winter as it means I can have a bit of a lie-in and still catch the sunrise, which generally happens at a far more respectable time than in summer.)

The second thing I love about my attic office is that it feels completely separate from anything or anywhere else. There's a door, then there are stairs, and then there is my lovely space waiting for me, like a creative haven. It makes it easy to feel that when I am in my office, I am stepping into a space that is just for me and just for my work.

But this is only where I work most of the time. In the early stages of a book, when I'm working mostly with a notebook and a pen, I like to get out and about with my work. I love taking myself off to a café, or to the beach, or just outside in the garden.

At the moment, I'm working on a sixth Emily Windsnap book, which means I'm thinking about mermaids a fair bit. That means I love putting a notebook and pen in my pocket and going for lovely walks along the coast path. I usually make a playlist filled with the kind of music that feels right for my book, and then I just walk along listening to this whilst looking out at the sea and thinking about my story.

Another thing I love is that from Cornwall (where I live) to London (where I go fairly regularly), it's a five-hour train journey. Writing on trains is one of my favourite things. I make sure I've booked a seat with a table, and I make sure my laptop is fully charged. Then I plug in my headphones, switch on the playlist, make myself comfortable and get to work.

I think that one of the most important things about writing a book is to be able to inhabit its world: to feel, whilst you are writing, as if you are part of it. Having a beautiful space to create my imaginary worlds – whether that space is a physical one or one that I inhabit through music, through sights or just through being alone in one of my favourite cafés – is one of the ways I remind myself every day that I've got the best job in the world.

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