We work 6 days a week with sabbath off
No fixed hours but try and keep sleep, exercise and weekly update meetings regular. As most people say we either work "all the time" or "not at all". I like it no matter how hard. My partner suffers because the uncertainty eats at him a bit.
We're at that stage where people think we are a) nuts to leave high paying jobs or b) deluded that we can actually do this ourselves... So the family/social support is kind of 50/50 which impacts lifestyle a lot. Example: we get free rent at home and our friends have preordered because I think they worry for us and want it to work.
I noticed I have less tolerance/ time for mates other than my closest friends who know me best and accept that sometimes the only time to chat is via Skype while waiting at an airport.
Overall, and I'm embarrassed to say this but this is the best lifestyle I could ever imagine. To be successful while living free like this feels almost like its unfairly good, though I'm not sure yet if I'll ever experience that.
We try and do volunteer stuff as when you're a founder it's so easy to be self centred. This helps us look outward and be less wingy bitches when the shit hits the fan.