Heal yourself, heal the world with positive energy

I have notebooks full of ideas for a book, but they are not exactly organized. One page has a story idea, another has dialogue, and another has a rough chapter outline. I know there is something good in there, but putting it together feels overwhelming. I started looking into custom ghostwriting services. Has anyone given a writer a messy collection of notes like this? Were they able to find the main story? I would love to know how much direction you had to provide.