i think nighttime is really rough for anyone, because it's kind of a lonely time and it's easy to just do whatever you want without anyone around to judge...i'm not a zen master or anything, but maybe try some meditation...i know it sounds hokey, but it can be really relaxing and you don't actually have to sit in the floor with your legs crossed and cramping..it's a good way to sort of unwind before you go to sleep and can help with some of the cravings...when is your quit date?