Most Important Part of a Narrative

There are many things that make a good narrative. Some may think that one part is more important then others, but to me the mos important part is whether the story stays on topic all the way through. The reason I choose this part is because I think that it is very annoying when people track off of subject when writing. I know that most of us do it at some point or another, but in order to have a really well done narrative it has to stay on subject really well. Staying on subject can really keep the reader intrigued and want to keep reading. When the writing tracks off from the subject it can really confuse the reader and cause them not to want to read it. So when writing a narrative remember that it is essential to stay on subject and to also include details without tracking off. If the subject is lost then it can really effect the entire writing. If it is lost it make a good narrative seem like it was not well done. Also it needs to stay on subject because it really keeps the narrative together as a whole. So out of all parts of a narrative I really think staying on subject is probably the most vital part of it.