@girlonthenet Have your own shit to do and don't be in each other's hair constantly.
Trust each other until you have a genuine reason not to.
And the best advice is this, paraphrased from one of the Hitchhiker's Guide books: "You care, I don't, you win."
This avoids so many unnecessary arguments. Do you care about what colour to paint the hallway or are you just trying to win an argument? Let shit go unless it *really* matters to you.
Married for 24 years this year, so it seems to be working