Why we don't do what we should

From the guy that brought you Getting Things Done...Now comes his synthesized list of the nine reasons we don't do what we should, in all aspects of our lives, in what I think is order of prevalence.

1. Fear
2. Lack of Self-Confidence
3. Lack of Knowledge
4. Trying to Do Too Much Alone
5. Trying to Do Too Much
6. Loss of Self
7. Lack of Energy
8. Lack of Reward
9. It Can't Be Done

And I would have to agree that most of these apply to procrastinators like me.