So I am not new to changing my diet. The problem is that I too often slip, and resort to my favorite standbys of soda and fast food. The difficulty lies in the initial thought of "I'm going on a diet". While under other circumstances, I may eat a calorie-limited meal, the fact that I am now "on a diet" makes the situation a dire one. Suddenly I am constantly hungry, and craving every thing that I can think of that contains saturated fats and/or sugar. My best solution is to make those calories count. That snack better be delicious as well as filling, or it just isn't worth it. I know that once I give it a few days, I'll be fine. I will start craving blueberries, and not doughnuts, and I will be happy to not get the gastrinal issues that surround fast food. Hell, I'll even be happy when some of the energy comes back from lack of all the sugars that I like to shove into my body. Until that time, I am guzzling water to help with the hunger pains, and hoping this headache from the lowered caffine intake will eventually go away.