Check out the Shangri-La Diet, at sethroberts.net. Trick yourself into being less hungry.
Easy to try, and it's worked for me, as well as a heck of a lot of people on their forums.
You don't need the book, it's more an explanation of why it works. Just get some extra-light olive oil and start by taking a tablespoon in the middle of a 2-hour taste-free window (no gum, no toothpaste, no cigs, no food, no soda).
FAQ post at forums: http://boards.sethroberts.net/index.php?topic=3398.0
A bug in the code is worth two in the documentation.