When I was getting established I was doing basically nothing but work. 80-100 hour weeks would not have been unusual for a good few years. Now I do nearer 50-60 hours I guess (8 to 5 six days a week?). Yeah, not good or healthy, hope my kids (and yours) don't have to do the same to provide a middle class income.

the great thing about having your own business is you only need to work half time - and you get to choose which 12 hrs/day!

Years ago I read a story where someone complained about working 12 hours day at Microsoft. Bill Gates overheard them and told them that is a half day schedule!