You have to be in the right frame of mind to quit, I quit on patches and was surprised at how much easier it was than I'd thought! Just make sure you don't get them wet (or change them right away if you do) and I bought some plasters and surgical tape to keep them on as they don't always stick very well.
I did a diary for the first few days to keep me occupied, noting when I'd have usually have had one and seeing them add up and allocating a price to each cig and noting how much money i'd saved and how much better i started feeling and the positive comments I got from people.
I also associated the thought of smoking with feeling physically sick which helped, bought some lovely smellies and a nice flavoured lip balm, some teeth stain remover and keep some toothpaste with you to keep your breath fresh. Also keep a bottle of water handy you can sip and some chewing gum and chewy breath mints. Also keep something handy to fiddle with in your hands, even a pen you can fiddle with and put in your mouth if necessary.
I made myself see the habit for what it was, dirty, disgusting, smelly etc... decided my life would not be rules by little cancer causing sticks.
Don't let a bit of failure put you off but never never buy some (my fatal mistake, wanted just one and bought a pack of 10 - HUGE mistake!).