1) Rotating hips and really clearing them out of the way.
2) Ball striking. I'm trying my best to go an entire 18 hole round without hitting a shot fat, thin, or on the toe with any club. It has really caused me to slow down, get tight, and focus. I have yet to be successful in my quest of 18 holes without a contact hiccup, but my scores are better. My misses are not as far off.