“Is it true that your life passes before your eyes before you die?”

YES.

“Ghastly thought, really.” Rincewind shuddered. “Oh, gods, I’ve just had another one. Suppose I am about to die and this is my whole life passing in front of my eyes?”

I THINK PERHAPS YOU DO NOT UNDERSTAND. PEOPLE’S WHOLE LIVES DO PASS IN FRONT OF THEIR EYES BEFORE THEY DIE. THE PROCESS IS CALLED “LIVING.”

Terry Pratchett (1948-2015) English author

The Last Continent [Death and Rincewind] (1999)
    (Source)

Often paraphrased as something like:

It is said that your life flashes before your eyes just before you die. That is true, it’s called Life.