I also second that book. I think the other possibility that people who are struggling with getting things done is maybe they like the idea of something more than actually doing it. I came to that realization when it came to programming. I discussed with one of my teachers (who also happens to be a life coach) my struggles, and when he suggested maybe I just like the idea of being a programmer more than actually wanting to be one. It definitely got me to think about things. Now I'm just spending more time learning about what I'm good at and focusing on my strengths.