Do your stories continually lead the reader on by listing events -- "and then this happened" "and then that happened" "and then"? (yes, I did put the question mark outside of the quotes here -- for emphasis.)
Or do you follow the advice of the guys who created South Park. "This happened and therefore that happened, but later this happened because..."
Click on over to Editor Cheryl Klein's blog where she shows the South Park guys talking about this. In addition she discusses "desire lines." What's that? If you are a writer of fiction and you don't know, you need to know and she has a good explanation. Enjoy.