Am I disabled? Now what.

There are two significant questions I think we all have to contend with. Am I truly disabled? If I am, then how do I live my best life despite my disability? For me, I might be going along well, and I think I can tackle the world, and then BAM, I'll have a terrible seizure. Yesterday, I was writing a scientific article about how climate (humidity, temperature, and seasonality) can impact the onset of seizures. I barely completed my article, and then BAM, I was seizing and badly hurt my arm. There are times I don't feel disabled, and then I'm reminded that I am disabled. Additionally, since I am unable to drive, I believe this is a clear indication of my limitation. Can you relate to this? Do you face those same questions? How do you manage it?