Great post by Wayne right here - http://initiativeone.blogspot.ca/2014/08/how-not-to-write-adventure.html
My thoughts: (going back to the drawing board).
All great ideas Wayne! this of course is now going to make me re-think my entire adventure module sadly. I have a section in it titled "its not necessarily a railroad, but here's the plot". As well, in order to get into one specific section of the dungeon, a certain amount of keys will be needed. And I had written in a NPC that will magically appear at a certain time. ugh. LOL!