> I used to be a slave to my startups. If I wasn't working, I had a perpetual feeling of guilt that I should be working. That lead to many all-nighters and eventually landed me in the hospital last year after fainting twice from fever and dehydration.

This is such a common story. I start work at 9 and stop at 6. That's it, no more, unless there's something urgent. It's amazing how much you can get done in those 9 hours if you concentrate.