Quitting smoking is a gift to yourself, one of the best things you can do to keep your heart disease from getting worse. Smoking reduces oxygen flow to your heart, speeds the buildup of plaque, and increases your risk for heart attack. Quitting helps reduce smoking's harmful effects. You may have tried to quit before, but don’t give up. Try again. Many smokers try four or five times before they succeed.

Ask for the support of your family and friends.
Join a quit-smoking class
Ask your doctor about nicotine replacement products and prescription medications that can help you quit.
Choose a date within the next 2–4 weeks.
After picking a day, mark it in bold letters on a calendar.
Limit where you can smoke. Pick one room or a porch, and smoke only in that place.
Make smoking outdoors a house rule. Other smokers won’t tempt you as much.
Hang a list of “quit benefits” in the spot where you smoke. Put one on the refrigerator and one on your car dashboard.