Why should our emotions always rule our reason? There ought to be a rational way to deal with urges, fatigue and so on. I think the methods currently under discussion are Pjeby's motivation techniques, cognitive behavioural therapy and possibly meditation. If these lines of inquiry bear fruit, then that should make it possible for people here to muster the willpower to do whatever it is they want to do. At that point we'll be able to say that any Less Wrong reader who wants to lose weight or whatever and can't, is failing to be sufficiently rational.