Feeling bad is actually a good thing, even if its not fun. That means your body is flushing out toxins and starting the ketosis. You are also re-setting how your body is working by teaching it to eat and process different foods than you normally do.
The best suggestions I have are:
1) Drink water and tea. Often, what you think is hunger is thirst.
2) If you are starving and really need a boost, cook up two beaten egg whites in 1 tsp olive oil. If you are really really hungry, add sprouts, shredded mushrooms, or shredded zucchini to the egg whites.
This will help hunger panic without cheating.
Click for Recipe
3. GO TO BED!!! The worst cravings and problems happen when you stay up too late. Also, your body has more time to start working properly while you are sleeping. (And dont snack if you wake up in the night to urinate. Drink some more water or herbal tea then back to bed. The ketosis WILL make you wake up with a full bladder, but if you eat something at night it will re-set and start over which you dont want)
4. Dill pickles were also my salvation the first few weeks when I needed a snack and water wouldnt satisfy.
Now, I made a homemade salsa and serve it on cucumber slices (IP nachos!) 2x a week. but the dill pickles are unrestricted.
5. As others have said, the first week is the hardest. You need to find the foods that are right for you as well as when to eat them.
Here is a link to over 80 recipes with pictures... many of them are easy to bring to work and all of them are easy for even non-cooks to make. All are ok for phase 1 (except where noted)
Link to Pix & Recipes
Roll mouse over pix for summary... Click the picture you like to get the recipe.