I have wavy black hair and an increasing amount of white.
Welcome!
Since you asked about being organized, I'll chime in. I'm much more organized than I was two or three years ago and don't mind sharing how I got better. Keep in mind, I still have a long way to go.
Read "The Art and Craft of Writing Christian Fiction" (Jeff Gerke) Great for keeping us grounded and focused on the right things.
"The Writer's Journey" (Christopher Vogler). This will be the start of the organization plan. Lay out all your story ideas and then see how far you can thumbnail the main character through a heroic journey. Whomever gets the furthest, take that to God and ask "Is the what I'm to write, right now?" If yes, move on the next step. If not, go to the next story concept in line and repeat until you have an answer or you're out of ideas and God is saying there's something else you're supposed to write.
Once you have a "Yes", map out the MC's journey on 3x5 cards or notebook paper. One or the other, but not both. Not a computer screen, be tactile. Erase, mark over, and dream. You're finished when you have the story structure mapped from start to finish.
Post a "
Tell me More" and teaser here for critique. This will help you gain better focus on what the real story is about. The tighter and clearer the focus the more energy your story will have.
Tell Me More ExampleOnce you have the journey and the synopsis, read "Story" (Robert McKee). Arrange the chapters in the story to follow energy guidelines. Ensure the chapter ideas can fit into your genre recommended scene/chapter length. Romance might have three to five scenes per chapter while Action might have one.
Use a NaNo style schedule; bang it all out in a month. I have this unpublished "How to write a NaNo story" blog post; one of the biggest recommendations is that once you have your story make it a four month effort. One month to get to know the character, one to know the setting, and one to write like a mad(wo)man. Go from start to finish without editing, critiquing, or second-guessing. Then spend a month recuperating.
I prefer to work on one "thing" at a time. However, the nine or so books in my head are all set in the same "world" and many of the characters go from one book to another.
As I've developed that system I've written two books from start to finish. Working on re-writing the first and drafting the third.