Back 12 years ago when I was starting up I did 6am - 12pm 7 days a week. These days just I don't have the same dedication
When I built my first business, I was routinely working 9am to 2-3pm, a bit less on weekends but still easily 8-10 hours, and 7 days a week. It was destroying my family life, with no appreciable benefit. I still work way too many hours, but not that many - and I shove work aside for personal life on a fairly regular basis. It just doesn't happen in nice 9-5 packages because I' self employed. So I might work 6 days hard this week, then 4 next week.
At 62 I am actually winding down now. I can still put in lots of hours but I waste more time on forums and Facebook nowadays.
When I went self employed ten years ago I would work from 7am until 1am but never right through the night. My wife protested until she realised she got control of the TV remote and could watch Emmerdale and Eastenders anytime she liked. :)
working from home, I am an early bird, my time i usually start working at 5 in the morning, by 8 i have breakfast with my girlfriend when she leaves for her job i have then till 13.00 or so till my energy level is so low that i need a long afternoon nap. Afternoon is mostly reading forum, news websites or see clients, by the time my girl gets home around 18.00 my day is done (because i say so) as well..
for the last 2 years or so I have been pushing it pretty hard working generally from 4am to 9pm 7 days a week. working from home means waking up in front of the computers and going to sleep in front of the computers.
result: we have grown our net over 400% in the last year.
caveat: I tend to take 3-4 days off in a row every few weeks to do fun things, skiing, beach, napa, whatever.
Remember, the great equalizer is time, you have the same 24 hours a day that your competition does, how do you use it?
I'd love to return to my normal work hours of 9pm-7am but now that I have a child that doesn't work. So now I work roughly 10am-midnight; off and on of course. I am not a morning person and I never will be.