Writing memoir or creative non-fiction? The question of what and where truth lives, or should live, in memoir and life writing is alive and kicking (off) all over the reading world, thanks to the latest fuss over The Salt Path - but writers have always struggled to work out how and what it’s OK to write when the whole point of their book is that ‘this really happened’.

So how do you decide what you want to write, and what it’s OK to write?