My mother has borreliosis. She got ill 10 years before it was known to be a disease. She is also a workaholic and for 10 years she was told that she ain't nothing wrong with her and that she's lazy by her very own doctor. And her response was: "mr. Doctor, now that I know how laziness feels, I promise I won't ever call anybody lazy again."
It's a tangent I know, but look at your attitude. And I sure as hell hope you don't ever burn out to find out how it feels and for you to tell me how well are you able to work. I'd rather have you ignorant for the rest of your life.
Let me say this much it might not be as hard as stroke, but It sure as hell feels worse than losing motivation or getting bored.
Physical conditions, or cognitive events such as stroke, that make you unable to work are NOT analogous to losing motivation or getting bored.