Castaras:
Fainting by mental triggers is definitely possible. One type of dysautonomia is known as neurocardiogenic syncope (and there's several types of that). Stress is a known trigger. Fainting at the sight of blood is also one. In fact, some of the triggers are pretty weird. I just think it's worth looking into is all!
Grif:
What Castaras says is The Truth (tm). That amount of work will destroy your health eventually. And hey. If it just takes a few years to recover, you'll be lucky. What if it's destroyed in a way that it can't recover from?
Something similar happened to me. I was working insane hours (though less extreme than yours). I was miserabe. My health cracked. I'm now disabled and it doesn't seem like it will get better. Sure, a job is valuable. Your health, however, is
priceless. Unfortunately, most people don't realize this until they lose it.
![Small Frown](images/smilies/smallstick/smallfrown.gif)
I know this. I was one of these people.