You can do it! I was a smoker for 21 years and quit 3 months ago. I will not lie, it will be rough, but will get better...I promise. Be aware of your triggers! If there are places in your home where you did not smoke, hang out there instead of the places you did smoke. If you sat in the same chair, switch to another chair. Stop haning out with people who smoke for a while, this will stop the urge.
Google diseased lungs, stories about emphysema, and what cigerettes are made out of. Also, google what to expect when you quit smoking. Knowing the sympotoms will help you defend yourself when you get urges. Last, talk talk talk. Talk to people when you are having an urge. Talk about what your feeling, and what you are going through at the particular moment. Always know that the urge will pass. Sometimes quickly, and sometimes 2 hours. Still, always keep in mind they will pass. It will get easier.
Good Luck!