" When you are in your twenties, even if you’re confused and uncertain about your aims and purposes, you have a strong sense of what life itself is, and of what you in life are, and might become. Later … later there is more uncertainty, more overlapping, more backtracking, more false memories. Back then, you can remember your short life in its entirety. Later, the memory becomes a thing of shreds and patches. It’s a bit like the black box aeroplanes carry to record what happens in a crash. If nothing goes wrong, the tape erases itself. So if you do crash, it’s obvious why you did; if you don’t, then the log of your journey is much less clear. "

― Julian Barnes , The Sense of an Ending