Over the years a number of people have told me how they’d love to write a book – only, they don’t have an idea to write about. I used to be fairly dismissive of this. My view was that if someone doesn’t know what to write about, they don’t want to write but rather (lord knows why) to ‘be a writer’.

The longer I teach creative writing, though, the more sympathetic I’ve become to this attitude.

We are born creative creatures – as children we know how to play, how to make-believe. If you’re lucky, you’ll have encouraging parents and a good teacher or two; if you’re lucky, your creative instincts will survive and even thrive into adulthood. But for many of us, creativity is something that is not nurtured, is not developed. Pressures on schools to deliver academic results above all mean creative subjects are often sidelined (and sometimes, as by UK Secretary of State for Education Nicky Morgan, actively discouraged). For many, by the time they leave secondary education, those creative instincts that were once so strong have been all but forgotten.

So when someone says they want to write but they don’t have anything to write about, they’re voicing a genuine need – an urge toward self expression which, carefully supported and nurtured, might well develop into an ability to write for a wider readership.

When I run creative writing sessions, my work often centres around helping participants to rediscover their creative skills – and when it comes to generating ideas, there are plenty of techniques that can help. Some of the activities I use involve striking two dissimilar things together (a snippet of overheard conversion, for instance, with a childhood memory of a place you once visited) to make new sparks; freewriting, using the prompt ‘I don’t want to write about…’ (this comes from Natalie Goldberg’s Writing Down the Bones); asking ‘what if?’ questions (What if London was flooded? What if a computer virus became conscious? What if sugar was banned?).

Even reading widely and noting what catches your eye can be a useful approach. In a recent series of workshops on creative writing about science and technology, we used copies of the New Scientist as source material. We selected interesting stories and news items, and made notes about possible themes that might emerge from this material (for instance, a theme of watching and being watched emerging from a news item about surveillance technology) along with any personal experiences that connected with our chosen material. By the end of the session the room was buzzing with scores of promising ideas.

Of course, some people have the opposite problem: they want to write, but they have too many ideas and can’t decide which to pursue. What then?

One option is to combine them all in a single project (probably a novel, since that form is stretchy enough to contain all kinds of disparate ideas). In her guide to novel writing Monkeys With Typewriters, Scarlett Thomas describes how she uses matrixes to harness all the ideas that are currently interesting her.

Or there’s another option, one I prefer: with each idea you have, pay close attention to your own reactions. I find this helps me distinguish between a promising idea that might be perfect for another writer but is just not for me, and one that feels like mine. If I can practically feel my pupils dilating, my mind’s eye focusing, I know I’ve got something worth exploring. In Short Circuit: A Guide to the Art of the Short Story, Adam Marek describes how he experiences this particular sensation: ‘It’s a feeling a bit like delight, a bit like surprise, a bit like weightlessness.’

Once you’re attuned to this sensation, it becomes far easier to recognise an idea that really resonates with you, and to become generous with all those ideas it feels like anyone might write. You can become profligate: spread them around, give them away … and what you give you shall receive, tenfold.