Expect to work 7 days a week too, there should be no such thing as 'bankers hours" for a young business. Pretty much at least dawn to dark, 7 days a week. Even more so if your competition keeps banks hours.
Take days "off" when the weather is too bad or business is a bit slow, and even then you should be catching up on paperwork, doing maintenance, cleaning the shop, etc.
If you are married or have kids, don't expect just because you make your hours it means you can leave at 2pm to go "help" with stuff she can easily do, etc. Stick to a set of hours just like a normal job.
My thoughts anyhow. Have a friend that might put in 1/2 the hours I do, always "something" going on... dog appts, fundraisers, ball games, teacher meetings, etc, etc, etc and wonders why he's just barely floating along. Yes, I understand family is important too, but they count on you to keep a roof over their heads and the lights on.
If you aren't decent with people and time management, better figure it out or hire someone to help you. It's tough to play secretary, scheduler, mechanic, laborer, truck driver, boss, etc, etc all at once.
Also though, keep an "off" switch too. You do need to go into "can wait till tomorrow mode" as some point in the evening. I'll get calls sometimes at midnight or 4AM and the person is upset when I call back later vs answering. At that point, I just politely let them know I'm not interested, they'll need to go elsewhere.