The New York Times reported today the deaths of two notable bloggers and the illness of another. Since this may be a correlation not a cause no one is saying that blogging can be dangerous to your health...yet.
It's not the blogging itself. The theory is the deceased worked themselves to death trying to keep their blogs current with all the information on the internet. You have got to be kidding me.
Every business owner knows you can never get all the information. Waiting for information causes paralysis which can be worse than death. (It can be a substitute for action. I actually had an employee who said he could not make a decision unless he had 100% information. It made him very busy and yet completely unproductive.) The internet has made information available 24/7 and there is certainly lots of it. That's the good news. The bad news is it changes very frequently so you can do a lot of second guessing. That'll drive you crazy too.
Decisions have to be made with the best information available at the time. Tweaking and correcting and modifying are all a part of being flexible enough to work with new information as it comes along.
Entrepreneurship sometimes involves hard decisions. There isn't enough information in the world to get around that.