Have any of you ever quit smoking? I'm on my second day without a smoke and the cravings are ridiculously bad. I can't sleep, I'm pacing around, anxious as fuck, head swimming, can't hold a thought in my mind for longer than a few minutes it seems, and any time I see someone lighting a fag I want to pounce on them and steal their life force. And cigarettes. Most of my friends smoke and I don't trust myself to stay true around them, so I'm having to avoid them for the time being. I'm just wondering if this is all natural, how long it lasts, if it gets worse, etc?