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How to come up with a good book title
Finish writing the book first and do not concern yourself with the title.
Some writers get stuck on the thought that an author must come up with the perfect title before starting. However, most authors do not find this a productive mindset.
Most writers will come up with a " working title " which is basically a rough draft edition of the title--temporary and almost guaranteed to change. After you write the book, everything will become more clear.