Good luck. If you have the option change your daily routine. Many of the cravings are associated with visual or auditory cues. I change my drive to and from work and gave up coffee when I quite smoking in January. If you smoke and drink coffee most people have to stop both at least for a while. Also excersise (sp) more, a lot more. Just like nicotine caffeine is an appetite suppressant, so with the headaches will come the desire to eat everything in site. Suffer through the first few weeks then it get better.
The next few weeks will suck but it gets better. I know the pain as my favorite thing to do used to be a smoke with coffee in the morning or a 12-pack and 2 packs of smokes on a friday night. Still drink but nothing even close to what I did, currently under the weekly safe guidlies for adult males. Where as before the local liquor store used to have my fix waiting for me every friday around 6:30 pm.