Have you ever become so immersed in a book that you became oblivious to everything else? Has a story grabbed you and not let go until you got to ‘The End’? Reality recedes when you dive deep enough to live in a story world, hearing, seeing, feeling and smelling it as if it is happening to you. Storytelling like this will bring readers back to your books.

Especially in romantic fiction, deepening point of view is effective for pulling your reader so far in that they feel as if they experience the story. Look for anything which could obscure or put distance between the reader and the story.

What kind of things? See https://creativityhacker.ca/2015/12/01/51-things-that-break-reader-immersion/