i'm actually in the process of quitting myself.. going on week 2
i suggest keeping yourself as active as possible.. the more engrosed you are in an activity (mental or physical) the less likely you are to think about smoking..
start eating breakfast!. most people skip breakfast.. i've found that if you have something to eat right when you wake up, it helps stem the cravings
you don't even have to eat much.. a slice of toast and a glass of milk helps
always remember that you don't need them, your better than that.
breathe deep and take time to really appreciate the benefits of not smoking
if your 3weeks smoke free then your over the hardest part.. good luck!
heres hoping we can both stick with it