To keep an audianceengaged you must do a detailed description of the scene or the characters involved in your writing as well as share a personal experience in order for the reader to compare his point of view with the writer. When a writer also explains their interest in the topic the reader can also compare and explore his own interest.
Kinda like how Gatsby is actually very lonely. He has all this money and he throws parties in hopes that his love, Daisy will come. Of course, one day she does.... but still...
