Candy,
I am having my own issues with my 3 1/2 year old. Some days it's tough. I don't think there's anything that works all of the time b/c little people are not yet good at dealing with their feelings but I've had luck with a few things (some days
If my dd has a breakdown or tantrum, I never raise my voice or yell back. It just escalates her tantrum and upsets us both even more.
I redirect. I start talking about something else, playing with something else or move her to another location.
My dd fights changing her clothes lately also so in exchange for the change I offer her to play outside for a while, go out someplace in the car, watch a dvd. I exchange the clothes changing for something I know she loves to do and it usually works.
We haven't had problems with the no word but have been through everything else you described and it's stressful some days to say the least. Each phase my dd has been through just ends all of a sudden. So, it won't last forever and you are certainly not alone in dealing with it
Also, I don't know if you like Dr. Sears but the Discipline Book has helped me a bit with dealing with these things. We are still working on a lot but it does get better
