I had a tendency to grip my clubs way too hard, especially my driver, and it was creating a very inconsistent drive. I loosened up my grip and concentrated on having a more controlled, slow backswing and it made a huge difference. I still pulled/sliced a few, but they ones i'm hitting straight are more often and 30-40 yards longer. And the ones i'm slicing aren't slicing nearly as bad as they were.
I also was just putting really well yesterday. And my short irons were also pretty on point. Still need to work on my mid range irons.