You suggested I shut the door, walk away, etc., though I don't want to look like I'm avoiding conflict, because that's something I used to do a lot. I think that I need to stop, leave and/or take a deep breath whenever things like this occur. One thing's for sure -- we DO have terrible communication, so these are some of the things I will thinking real hard about while I tinker my DB/DR game plan tonight.
I think with both of these things, less can be more. If she says something you do not like, just stand tall, keep eye contact, and a lack of any words can come across as standing up for yourself, without saying a word.
Same with communication. I wish I would have practiced this more, but I know many women want someone to listen more than anything else. Say less, listen more, communication will improve and there is less of a chance to screw up!
BITS
Happiness is not something ready made. It comes from your own actions.