It’s not uncommon to hear people say (and maybe you’re one of them) “oh, that [John Williams/other famous composer] is so unorignial! He just steals from other composers!”
I have a dirty little secret: we all do in some way.
Does that make us all hacks and charlatans? Hardly.
The reality is, there simply isn’t anything genuinely “new” left. Any possible way you can think of to deploy musical sounds has already been thought of in some manner….
Read the rest (and much more) in my book Writing and Living in the Real World: Advice for Young Composers