I will suggest you take a look at these books. The step 0 of Bill Aulet’s books are all about “how to come up with an idea”. * Bill Aulet, Disciplined entrepre

I will suggest you take a look at these books. The step 0 of Bill Aulet’s books are all about “how to come up with an idea”. * Bill Aulet, Disciplined entrepreneurship, 24 steps to a successful startup * Bill Aulet, Disciplined Entrepreneurship Workbook