Dear more4me,
I really congratulate you for taking the right decision: it’s the best for you and your family.
There are certainly a lot of books, parches, pills, medicines, etc. which will reduce your nicotine dependence; however the real desire to quit smoking is inside you.
You need to help your brain and body to get over the desire of having a smoke, stop thinking about it all the time, and start living a normal healthy life.
My family owns an alternative medicine center, where we practice yoga, meditations, breathing exercises, etc, as well as we help with fighting addictions, stress, anxiety and other similar problems. 
We have worked with a lot of smokers, and our results have been very successful. Please consider the following:
1. Breathing exercises (you can also do them with your kid, and it will help with his asthma):
Put a hand on your abdomen and, as you inhale deeply, feel your stomach expand as though it were being filled like a balloon. Now let the air out and feel your stomach return to its normal position. As you do the exercise, pause comfortably at the end of each exhalation until you feel ready to take the next deep breath. You can achieve even greater relaxation if you close your eyes during deep breathing and let your mind focus on a restful scene or a word like calm or anything else which gives you a peaceful feeling.
Keeping your eyes closed, breathe in deeply, let your stomach expand until your lungs are filled. Now pause for a moment and then exhale until you have emptied your lungs. Pause for a moment. Take another deep breath in, filling your lungs from the bottom. Hold a moment…and now let the air flow out, focusing your mind on restful thoughts. Keeping the pace regular, again breathe in deeply…hold a moment…and now let the air out, feeling more and more relaxed. Take another breath in…hold it for a moment…now gently breathe out, letting the tension escape from your body. Once more breathe in…pause a moment…now exhale, feeling deep relaxation. This ends the exercise.
2. Yoga
You can certainly find a lot of link on Internet. To start, check out this one: http://www.abc-of-yoga.com/yoga-and-health/yoga-for-asthma-and-bronchitis.asp
3. Meditation
This can guide you through meditation process: http://www.solveyourproblem.com/quit-smoking/quit_smoking_techniques_music_meditation.shtml
I wish you the best of luck with what you’ve proposed, and don’t give up!! :wavey:
Natalie.