Here's a simple trick to get your hydration, and practice a little "caloric restriction".

If you feel hungry, or think you feel hungry, drink a glass of water...at least eight ounces.  Then wait five minutes.  During the wait, think about the healthy stuff you can eat and think about the unhealthy stuff you shouldn't eat.  After the five minutes is up, ask yourself if you are truly hungry.  If so, eat.  If not, don't eat.  Simple.

Not sure what to eat?

• "Meats and vegetables, nuts and seeds, some fruit, little starch and no sugar" -Greg Glassman

Here's some references to healthy eating:

• CrossFit Journal "Meal Plans"
• Robb Wolf
• Paleo Diet
• Enter the Zone