Some different advise.
Be as respectful of your business as you were your former employers. Sure you are at home, but you are also at work. If you would not have sat around and talked about family stuff at your 9 to 5, don't do it now.
Make sure friends and family treat your new job just like the old one.
A lot of people think that you can spend all day chatting or just hanging out because you work from home. Nip that in the bud.
Respect each others tasks.
Don't go second guessing each other or "back seat driving."
And this should be a rule for ALL marriages,
When the lights go out, you both are only allowed to talk about the days victories -
"That tour turned out great"
"I'm so happy about our new client"
"You handled that problem wonderfully"
If it doesn't sound like one of those examples, it will wait until after breakfast the next morning.
I would be lost with out my wife.
And we have had to face, and overcome, all of those issues.
And one last thing just remember -
"The only thing worse then working for your self is working for someone else."