The hard part of working that much is trying to balance work and Family. Mostly I've given up sleeping- I know it's not ideal, but I'm down to 3-4 hours a night.
In full honestly, the 65 hour figure only comes in when I include travel time. (about 2 hours/day)
My typical day is:
Get up at 5am, and head to work. Work from 6-4, then head home. Drive home. Family stuff from 5-7 until my partner gets out of work. 7-1, Startup stuff.
1-5, sleep.
On the weekends, I try to get a bit more family stuff in, but then I usually end up going to work for another 3-4 hours on Sat/Sun, and put in the rest of the day on the startup.
I wish I had time for a 2nd job, but, really, the startup is the 2nd.. and the 3rd. ;)
I'd love any ideas to raise additional money for the startup- If we could work on it full-time, we'd really be doing something special.