The problem of most writers is dumpsite writing.
They have an idea what to write about, but they keep accepting prongs that may thwart their message along the line.
They want to be perceived as superheroes in writing, extending their ideas to unnecessary points that are confusingly conjured.
They want to write about a topic but they don't know how to say 'this is beyond the scope of this literature.'
As a colleague had said to me one day, "If you finish all the work today, what would you be doing tomorrow?"
If all those ideas get dug into one book, what would you be writing tomorrow? Well, this is not entirely literal.
The resultant effect is that the writer keeps thinking that the title he had earlier chosen may no longer fit into the work. Then starts the confusion and on it goes.
He then seeks to infuse some connecting ideas or eject some to give a good fitting. While that is good and one of the ways of writing effectively and meaningfully, a writer must be careful not to apply it wrongfully.
Certain things just have to be meant for another work. It gives room for an expanded thought and a bearing of new ideas and prompts.
One of the ways I handle such idea rush is to separate them into folders according to what they hold. That way, I don't get to lose them. I can then retrieve them and develop them upon need.
If this has helped you, do well to share your thoughts.