Thanks to this article, today I learned that there's a name for the thing I have, "delayed sleep disorder."<p>I became an entrepreneur at age 22 not because I wanted to change the world, but because I just wasn't able to wake up early enough for a "real job." I figured there had to be a way to make the same amount of money I was making at the time, but keep my own hours. I always tell people I have "vampire hours."<p>I'm 38 years old now. I typically go to sleep around 4am+ every night and wake up around 11am or noon. I usually don't take meetings before 1pm and have unknowingly designed my life and career around this disorder.<p>I was also diagnosed with ADHD as a kid, which, according to Wikipedia, is linked to this sleep disorder.<p><a href="http://en.wikipedia.org/wiki/Delayed_sleep_phase_disorder" rel="nofollow">http://en.wikipedia.org/wiki/Delayed_sleep_phase_disorder</a>