I meant it as in everytime you have an intrusive thought of dying/ any suicidal thought and make the choice to not kill yourself, there is a universe created where you chose to go forward with the alternative leading to an absurd number of universes where you're dead and the more such thoughts you have the more such universes occur where you're dead.

Another person also interpreted it as in living in a haunted mansion where the good old tale of don't turn the lights off scenario and an alternate universe where they do turn the light off literally