Why We Don’t Do What We Know We Need to Do
"The problem is that many change efforts are based on the assumption that all you have to do is to explain to people that their life could be better, be convincing that the goals are worth going for and show them how to do it." David Maister, Strategy and the Fat Smoker

We don't make most changes because the benefits come later, whereas the pain (of self discipline) comes immediately. This is not a good deal for the emotional, instinctual part of us as human beings.