Everyone has said it before. Nobody has said it exactly the way you would. Say it your way.

Subject matter has been used up for centuries and it has never mattered much. What people come back for is the handling: the particular rhythm, the specific angle, the small honesty in how a familiar thing gets put. The shared truth is the reason anyone listens, and the voice is the reason they listen to you.

Stop screening your ideas for novelty of topic. Write the obvious thing you have to say, then spend your effort on phrasing it the way only you would.