One the greatest gifts Sherlock Holmes gave to the world is popularizing the science of deduction. That is to say, he showed the layperson how to think a problem logically backward.
To address the question of figuring out the ideal writing life, we should think about the final result. Most of us writers write so that others may read our craft. The end goal, then, is the reader. How do you want readers to find and read your story? Do you want them to find your book in a public library? Or do you want to make it available online for anyone who has an Internet connection? Or do you want readers to purchase your story? How you want readers to find your story is important because creating a story that is read is not the same as creating a story that sells.