I smoked my last ciggie 1 year and 1 month ago.  I made sure I had everything I needed in the house, bought myself some new PJ's and stayed inside for a week of cold turkey.  This included ingredients for making lots of syn free yummy stuff (the cooking kept me occupied).
I did a lot of wii fit stuff, and found that the yoga in particular really helped.  I think one of the things that we get from smoking is those 5 minute intervals where we stop what we're doing a focus on our breathing.  It's a shame that we have to be inhaling and exhaling smoke and a load of chemicals for us to consider this worthwhile.  Anyway - the yoga does the focussing on breathing which was helpful.
The first 3 days were really hard - lots of headaches and tightness of the chest / feeling jittery, etc.  (Be really aware of all the possible side effects of stopping smoking, and when they are likely to kick in and subside.  It's a lot easier to deal with unpleasant feelings if you understand why they're happening and know it's only short term.  Knowledge IS power).
When I started going out again it was harder because then I had t deal with 'habits'.  But I remembered all the hard work I'd done in that first week and somehow managed not to cave in.  I changed little things, like my route to work (I always lit up at the same points in my journey, so passing certain places was a bit of a trigger).
If I was really really struggling I would wash my hands and leave them to dry naturally, telling myself that if I still wanted one once they were dry enough to hold a ciggarette, then I'd have one.  Cravings geerally only last a ridiculously short time, so by the time they'd dried I felt okay enough to resist again.
This is a good website for info...
WhyQuit - the Internet's leading cold turkey quit smoking resource
I'll shut up now.  Lol.
Good luck xxx