I have had sleep problems all my life. Apparently, I didn't sleep through the night until I was 4. Normal me doesn't require much sleep at all. I routinely used to go on 5-6 hours of sleep and never was tired. Sadly, this all changed when I was 16. That is when I started needing naps after school. It slowly escalated to me being tired all the time and sleeping whenever I was able to do so. I now have the diagnosis of idiopathic hypersomnia, and it's horrible, especially for somebody who doesn't naturally need sleep.
I blame my hypersomnia condition on taking SSRIs in the past. I never had a problem until I started Zoloft, which was the first psychiatric medication I took for my OCD. I later took Lexapro and Prozac, which also caused extreme tiredness. I think that the SSRIs permanently screwed up my serotonin system, making my sleeping patterns permanently damaged, as well. And none ever helped my OCD to begin with. The only reason I am able to function in the world nowadays is because I am prescribed Daytrana transdermal (methylphenidate) patches. If I don't wear my patch, I will literally sleep all day. Even with the patch, I still have this "background tiredness" that never goes away, but I can keep my eyes open and function, at least. The Daytrana is why I'm able to hold down a job. But the tiredness interferes with my free time a lot, because it's so hard to stay awake to read or watch TV or do projects.
I also have been diagnosed with "circadian rhythm disorder- irregular sleep-wake type." Basically, this means that I frequently nap throughout the day, at irregular times, and I can wake up at irregular times. Like, in college, the way that I managed keeping up with my coursework despite sleeping so much was that I'd wake up at, like, 3 in the morning and work until 5 am or so. Then, I'd go back to sleep for a while before getting up for my morning classes.
And even with my hypersomnia, I still frequently have nights where it's hard for me to go to sleep and "slow down" because my thoughts are racing and I'm overstimulated.
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Helinger: Now, what do you see, John?
Nash: Recognition...
Helinger: Well, try seeing accomplishment!
Nash: Is there a difference?