Cancer.

I never knew he had cancer. Apparently he's had it since he was one, which is why he went blind in the first place. Retinoblastoma. What's more, he was only 41 years old, which made him 21 at the release of See the Light. He already sounded like a mature and experienced musician perfectly at home with the likes of Stevie Ray Vaughn.

So he spent his entire life fighting cancer. I suppose that if he can do it for 40 years, I can do it for ...?