I slipped up and smoked a cigarette. I've smoked 1-2 a day. I feel really guilty except that I'm not smoking a pack n a half to two packs. I buckle under stress. Even though I've smoked a couple a day I'm still totally tired with headaches and I'm just walking through a fog. I don't know what to do anymore. I feel really bad about not succeeding like I thought I would. Has anyone else slipped up? Any ideas?