best of luck to you, and congrats on making this decision.
i used to smoke approximately 2+ packs a day. i tried to quit many, many times previously and failed miserably. my symptoms weren't as edgy as yours were, but there were enough to make me run out and buy a pack and give in. about two years ago, it must've just been the right time, because i quit and it wasn't hard at all. i didn't use any aids or do anything differently, but it worked. i think i just had to be 100% absolutely READY and willing. i never was 100% before and it definitely showed. i've been smoke-free for about two years now and i don't get cravings. the only thing i miss every once in a while are the habitual times that i would have a cigarette (after dinner, in the morning, etc), but it's not a big deal.