I found an interesting fact about decision making in an article on the determinates of poverty.
Researchers have found that exerting self-control on an initial task impaired self-control on subsequent tasks: Consumers became more susceptible to tempting products; chronic dieters overate; people were more likely to lie for monetary gain; and so on. As Baumeister told Teaching of Psychology in 2008, “After you exert self-control in any sphere at all, like resisting dessert, you have less self-control at the next task.”Put off important decisions until "tomorrow" and when you wake up make that decision the first of the day. Even before any other insignificant decisions (orange or grapefruit?).