Nonster, those first couple days of P1 are hard. At the most, they'll last 5 days, but they could be less. You'll be amazed at how easy it is once that is over! So, do as others have suggested and have a plan in place. If you work, get someone at work to help you stay away from the non-OP food during that time. Take a walk to their office/cube and spend some time with them, drinking water or having an OP snack. Try to incorporate veggies, good carbs, and protein. Homemade 3 bean salad, red peppers or tomatoes with hummus, roasted chickpeas, refried beans with low fat cheddar cheese melted on them (and sugar-free salsa, if you like it) are good choices. They'll help a lot with the cravings, help you feel full (protein), and help you stay full longer(veggies).
I also found it helpful to chew SF gum, have a SF hard candy (make sure you stay within your 75 cals of sweet treats, okay?), or drink tea. There are tons of herbal or decaf teas that have amazing flavors and can really help the craving. I loved having a decaf 'Creme Caramel' tea with a bit of 1% milk and splenda. There is also a gingerbread herbal tea I found at Christmas that I would have with some vanilla SF syrup. Both tasted and smelled like a dessert and really satisfied me until it was time for dinner.
Sometimes I crave food in the afternoon because I'm tired and used to using sugar to boost my energy. You can also boost your energy with exercise, so find an excuse to take a walk around your office...you can also use that time to visit with supportive friends and get their help avoiding eating the foods that will make it worse.
As much as you are able, try to get your coworkers/family's support in keeping non-OP foods away from you during the first week of P1. I think you'll find them very helpful if you ask.

I know you can do this, hon! We're rooting for you!
