I've had serious issues with my mother for years now. I know how tough it can be to fight with your mother... she's your mom, you know? You want to love/honor/respect her, as Misti said, but sometimes it's so dang hard. And one thing I learned is that you have to make sure you don't give youself up in the process of maintaining a relationship with her. Don't always be the one to give in, if you genuinely feel she was in the wrong. Don't remain quiet if what she's telling you is tearing you up. Make sure you keep your voice and your being strong in the relationship. Mothers have an innate ability to make us feel terrible like no one else can -- because they're supposed to be the one person in the world to stick up for you and be on your side. But mothers are human too... so there has to be a little recognition of that.
It's hard, Dreamer, but don't give up on her or the possibility that you two will learn to co-exist peacefully. With my mother it took two years of silence and finally an agreement that there are some things (mostly divorce-related) we just can't talk about for fear of well, not speaking for another two years. And I'm not a touchy person.
I guess my main point would be to make sure you stick up for yourself. This may not be in the form of immediate argument... if you're in the heat of a debate and are defending yourself simply because you don't want to back down, that's not what I mean. If you two get into troubled situations, try to calm down, remove yourself from the conversation, and tell her you would like to continue when you aren't angry and name-calling each other... That way you can rationally figure out what was going on. Try to analyze what's beneath your arguments. The "you're doing everything wrong" position is a convenient one for her to take, but remember that she's probably not always just making broad generalizations. If you step back and give yourselves a bit of time away from the argument, you might be able to concede one or two things that you could have done differently... and this sort of concession does wonders for diplomacy!!
Longer bit of advice than I intended, but having just come out of a very long spate of troubles (8 years?) with my mother, this is a topic I have a lot of thoughts on
Good luck... stay strong, and we're here for you
