My personal advice for stage one is to go into it prepared. If possible, remove none GAPS foods from your refrigerator and pantry. Have food ready before you are hungry. Take the approved ingredients and make them taste delicious. GAPS is a therapeutic diet but that does not have to mean it is bland.
Next, give yourself some self soothing time. If this is a big change for your body, it is likely going to show you by the way you feel. The first few days I felt like a had lead in my shoes. I also cut the coffee habit by the second day, resulting in a two-day headache. Every one is different. If you drink coffee regularly, taper down before the diet begins. Do what is best for your body. If you still are tapering off during stage one, omit any cream or sugar so you are just getting the coffee in until you can let it go. I do not recommend stopping at once if it has become a serious habit.
See if you can team up with someone for support and inspiration. Sharing meals is always nice.
Finally, if you have to go out to a restaurant, eat at home first! Unless you live in a very hip city, (like Portland, OR), chances are there will be nothing you can eat on these first stages and even beyond. Have food near by, eat coconut oil from a jar in your bag. What ever you do, don’t let your self be hungry and watch other people eat food that, in the moment, you wish you could.
One more thing, if you are a foodie like me, something important I learned is that OCCASIONALLY, I can eat something that I am not in the mood for. I lived through it every time and if that has to happen a few times to get through stage one, its okay, you will live through it. Yes, I even fantasized and watched my friend eat hot, cheesy pizza with the steam wafting up my nostrils and then I had soup. Whew!