There’s an old quote by Mark Twain that goes
I Am an Old Man and Have Known a Great Many Troubles, But Most of Them Never Happened
This quote is probably misattributed to Twain as there is much speculation about who actually said it first ranging from Thomas Jefferson to English author Martin Farquhar Tupper, Seneca, Winston Churchill, James A. Garfield, and more.
The source of the quote doesn’t matter. Its truth resonates as it was probably thought, written and spoken by many men throughout history in slightly different forms.
The point of the quote is we do not live in reality. We live our lives in the stories we tell.