That's the main thing. Folks say they want to quit all the time but the only ones who truly want to can go through with it.
I quit dipping cold turkey Oct. 4, 2011. I set a date that I would remember and challenged myself. Now granted, I only dipped for 5-6 years, but nicotine has a way of messing up your quit plans. Withdrawal won't kill you, and each day that passes becomes easier to say no. Think of it as a challenge to your will-power or manhood.
The tobacco is what contains the carcinogens, but nicotine is what keeps you coming back, which is why I didn't try nicotine gum. Just something else that becomes a habit, in my opinion.
Circle a date on the calendar, get your friends and family to hold you accountable, challenge yourself and do it. And keep plenty of sugar free gum and hard candies around. The urges will grow less and less each time.