there are so many methods. first of all, you need support from friends who will either agree not to smoke in front of you, or who dont smoke. the more you can avoid being in situations and places where people are smoking, the easier it will be for you to move on.
another REALLY good bit to help you stop smoking: cost. figure out how much you spend on smoking in a week, a month, a year.... then figure out something else you could do with that money. the best thing you could do with it is pay off or pay down debt. or you could buy yourself or your family something new.
the other way to quit smoking is God. He is the only one who can give you the victory you seek. He is the only one who can give us the strength to overcome temptation. smoking is a useful device the devil uses to get people distracted and lead them away from a healthy life... the devil knows it hurts us, and he likes it that way. every hour, day, week, month you dont smoke, thank God for the victory.
i had a friend who had tried EVERYTHING to quit smoking. she attended an amazing facts seminar in the local church and she found the key she needed to give her struggle to God and she quit smoking and never looked back.
www.amazingfacts.com is the site - there are free onine Bible studies (or school) that you can look through and find your victory!
God bless!