I certainly don't claim I'm a great programmer, but I can attribute a lot of my career success to focus on and learn to improve #5. I got the itch to improve it because the greatest programmer I know is a true master of rapidly debugging problems, and great at un-sticking projects when no one else can/will.

I was able to improve my own skill in the matter with the "Learn to Debug" section in the "How to be a Programmer Book": http://samizdat.mines.edu/howto/HowToBeAProgrammer.html