Nice article by Paul Graham about Good and Bad Procrastination.
It basically leads via another viewpoint to go for the important rather than the urgent things in life - focus on the things which might be mentioned in your obituary, or
What's the best thing you could be working on, and why aren't you?'
He mentions that this will include getting rid of thank-you notes etc. which in effect might the world a bit darker. Still, for the ambitious this is a good question!