The spoon analogy was actually written by a woman suffering from Lupus.
https://butyoudontlooksick.com/artic...-spoon-theory/
But it is such a good analogy it can be applied to just about anyone. The idea is when you are young and healthy you pretty much have unlimited spoons. So I think different people, depending on their health, both physical and mental, can start with different amounts of spoons. One little thing can change it, and it even changes from day to day with some chronic illnesses. And it is entirely possible to try and use more spoons then you have for the day. Many of us will pay for that the next day by starting with even less spoons than normal.