I packed up on about the 6th try over 16 years ago - cold turkey from 40 a day. I've never met anyone apart from my dad who managed it by cutting down gradually (mind you, he only smoked 7 a day to start with
)
16 years on I've absolutely no craving to smoke again, although the first 3 years were hell. Patches and chewing gum helped, but you need to be careful that you don't get hooked on the gum instead like my sister-in-law did. In fact I now find the smell of tobacco repulsive. It's only when you stand next to a heavy smoker you realise how badly you must have stunk. I may not have the craving any more, but I know that if I did try a cigarette now I'd be back on 40 a day in 2 weeks flat. Once you pack in it's permanent - don't even think about the odd one at Christmas.
The downside: 1) three and a half stone weight gain, which I'm still wrestling with. 2) For the first year after quitting I'd never been so ill in my life: chest and throat infections galore and near terminal mouth ulcers. It's as if your immune system takes a break after battling with all the toxins in tobacco for decades. It does improve, though.
Stick with it. You won't regret it in the long term.
The only thing I can't figure out is what happened to all that money I've saved??....