I am urged to write a book but I can't think of anything to write about. Can tu please help me?

what about a nation being torn between two kings both brother and the main charter a mercenary under the older of the two, must find out who he truly should support in this war that threatens to destroy the kingdom.

how about tu write about a boy who likes this girl named Charlie in class . and on the 5 día of school he wistperd it in her ear . them few days later he hates her because she scratched him on a miska. this is ture that's what happened to me\