9) Have a treat once a week.

If you deprive yourself of all treats, then you're just setting yourself up for failure. "Being too stringent on a diet can beget a downfall. To prevent this, once a week, for one meal, have your favorite foods" (source: Fitness Rx; February 2004; page 96).

One of the major reasons people fail in their fat loss efforts is that they adopt the all-or-none mentality. When the attempts to stay away from all treats fail, it's easy to think ‘Oh well, I've already blown my diet. Might as well eat another slice'. Planning a weekly treat will help curb those cravings, making a binge less likely.