Write down a mantra for why you are quitting cigarette smoking. Whenever you feel your willpower falter, repeat your reasons for quitting to yourself until your craving has passed. This is a strong way to take the physical and mental focus away from your nicotine withdrawal symptoms and put it on the things that are most important to you.
Find support groups, either locally or in the online community. Many websites are dedicated to helping you quit smoking. It's a great way to compare different outlooks and methods before you become disheartened or begin to doubt yourself. Furthermore, people who are quitting alongside you will understand the unique emotional struggles that accompany this journey.