John rubbed his hand over his eyes, already there was a headache squeezing his temples.
I then rewrite those parts to the correct perspective. So, during one of my edits, I will specifically watch the perspective and highlight any that shifted. Which is fine, what isn't fine is not realising it and thus not correcting it before publishing a book. Now, don't ghet me wrong, we all make the mistake of head hopping. As I have several major characters in all my stories, I always need to be aware who the narrator will be. That becomes the dominant character in that scene/chapter. So I see the other characters react through his/her eyes. By that, I mean, whose head I am in at that time. Whenever I write a scene or chapter I always have an idea who the narrator is. To me, "head hopping" is a big red flag that tells me that this person is not yet experienced as a writer. I have seen in a few unpublished stories by young writers, where the authors didn’t really take into consideration who the narrator was within a scene or chapter and this led to a disjointed story as the narrator randomly changed mid-scene. If you are writing a book in 3rd person your narrator will probably change (unless you’re writing 3rd person limited). Now by ‘perspective’, I mean in reference to the narrator’s voice. Now, I have a very high standard when it comes to books and certain things will instantly have me remove a star or two from a review. I get asked to read and review a lot of books written by new authors.