“If you made the unfortunate mistake of underestimating your hunger, you will be unable to enjoy the final third of your sandwich because you will be too busy being afraid that there will not be enough of it. Every wonderful bite is filled with the painful realization that it is bringing you closer to having nothing more to eat. You begin to panic. You try taking smaller bites and chewing longer. You alternate taking a real bite and just sniffing the sandwich and moving your jaw to simulate eating. But nothing can reverse the inescapable fact that you didn’t make yourself enough sandwich.
Conversely, if you overestimated the amount of free space inside of you, you will be faced with a harrowing battle of man against sandwich. And the sandwich always wins. If you force yourself to finish the sandwich, it will defeat you from the inside. If you give up and leave part of the sandwich uneaten, it will haunt you with guilt and feelings of inadequacy.”