I've recounted a number of times my getting written up at work for falling asleep on the job, and the jeopardy it put me in.
I was very aggrieved with the entire thing until I actually got on the CPAP. I've come to realize that it may have been one of the best things to ever happen to me because yeah, I felt awful all of the freaking time.
I just never realized it until I started feeling really refreshed when I got up in the morning.
My coworker, who got written up at the same time, refused to take responsibility for it and refused to go the medical route even though I begged him. He kept falling asleep at his desk, and he kept being caught. It finally snowballed, and he lost his job.
The only thing he didn't refuse to do, but did willingly, was blame everyone else for the situation, including me. When he lost his job he immediately texted me blaming me for ratting him out. I told him it was time for him to grow up and take responsibility for both his health and for his inaction because HE is the one who lost his job, and he did it all himself.
I never hear from him again after that.
He had a real victim mentality thing going, which in some ways isn't surprising given that he was openly, flamboyantly, and militantly gay.