I am slightly workaholic, I think it comes with the autism. Before I met A I was falling asleep most nights in my office and would forget to eat for days. I don't think this helped when I got cancer as I was significantly underweight. These days A does insist I take breaks and I do eat every day.
I don't expect people that work for my company to follow my example though, I operate extremely flexible working practices. I think if people know they can skip work to sort out their personal life, for the most part they make sure the work gets done and they are happier. One of my team is up in Scotland at the moment as his mother in law broke her hip and needs help. His wife is a nurse, and the NHS would not give her paid leave (they could, but chose not to which is disgraceful). He is keeping on top of things as best he can but I certainly won't pressure him.
A couple of years back I won 'businessperson of the year' in my region. It is the first time anyone running an SME has won it, rather than an exec at a large enterprise (the previous winner was the CEO of British Aerospace). I am pretty sure it was the session where they went around the company and talked to my team that made the difference.
But to get back on point. Not working more than two days in a row would bring me out in hives.