Adding interesting characters can make a long drawn out story more engaging. When the characters are unique and have their own personalities, readers or listeners are more likely to stay interested.
A long drawn out story can be made more engaging by creating a strong plot with twists and turns. If there are unexpected events and revelations throughout the story, it keeps the audience on their toes. For example, a mystery that gradually unfolds, or a conflict that has multiple layers and is not easily resolved. Also, using vivid and detailed descriptions can draw the audience into the story world. Describing the settings, emotions, and actions in a rich way helps to make the long story more immersive.