Emma! Lots of great advice in here.
The chicks are right--if you're still physically craving, you need to do Phase 1 for 3-5 days (or until the cravings go away).
There are tons of ways to satisfy a sweet tooth in Phase 2, but you also want to try to change some of those habits you had in the past. I do this by scheduling two treats a day (after lunch and for my evening snack) and doing my best to stick to only those. That seems to help a lot.
Check out our recipe forums for tons of great recipes (even for Phase 1) that will help with sweet tooth issues and chocolate cravings. And don't forget your 1 oz of dark chocolate a week!