Remember that many of these physical symptoms will go away within the first couple of weeks. After the first week, much of the nicotine will have left your system and with it your body’s reaction to the immediate loss of a chemical that it had become used to.

After that, you will still have cravings and other reactions, but these cravings will be based on the psychological associations you have developed, such as not being able to enjoy your morning coffee without a cigarette. But these associations will lessen over time.

The best thing you can do at this stage is to know what to look for and to plan how you’ll cope when cravings happen and symptoms occur. The better you can anticipate times when you are going to be tempted to smoke and the more you have specific plans for managing them, the more easily you will negotiate the next few weeks. Even if a temptation sneaks up on you and. catches you unaware, it’s still good to have thought through the specific things you can do to get past it without smoking.

You’ve already learned how to cope with nicotine cravings using healthy snacks and delaying the urge to smoke. The following are suggestions for how to handle some of the other sensations you may experience as the nicotine leaves your body. These were developed from our own work with patients and decades or American Lung Association programs that have helped thousands of people quit and stay smoke-free.

- Fatigue, Feeling Extra Tired

For many people, nicotine acts as-a stimulant. Now that you have quit, your body is going back to normal. If you feel tired or sluggish, try to reserve some extra time for sleeping. Let yourself take naps and don’t push yourself too hard. Remember, you can’t smoke when you are asleep. On the other hand, another way to overcome feelings of fatigue is to exercise.

- Dizziness, Headaches

If you feel dizzy, make sure to move around a little more; slowly and carefully and be extra cautious. Unless you and your doctor have decided you shouldn’t use them, you can try over-the-counter, non prescription pain medicines like aspirin or ibuprofen to get rid of a headache.

You might try cold compresses or taking a warm bath or hot shower when you feel a headache coming on. You can also drink more water and reduce your intake of caffeine. Try cutting down or replacing your morning coffee with herbal tea, or start making your coffee half decaffeinated.

If the cause is a specific fear you can make a plan to try to avoid this fear. If it is economically driven, for example, make a plan or a budget to live by. Try to start saving, which will alleviate your fear somewhat.

If the anxiety is caused by some event in the past and it is playing like a loop in your head over and over again, you can will it to stop with techniques a health professional can teach you.
Accept the past for what it is – the past. You can not change it. Learn to live in the present, and as they say in Alcoholic Anonymous – “change the things you can and accept the things you can not change”.
Since there is such a strong body and mind connection you could do some physical things to help you cope with anxiety. The first and foremost thing is exercise. Exercise releases serotonin in our brain, and serotonin is responsible for our feeling of well being. If you manage to increase the level of serotonin with vigorous exercise, you will feel better.

Learn some relaxation techniques such as meditation, listening to music or engaging your mind by solving crossword puzzles or reading a book. Going to the movies is also a good distraction. Remember what you feel now you might not feel in an hour.
You must have enough rest to help you brain regain it’s balance. Lack of sleep has many diverse affects on the body and increasing the stress level is one of them.

Change the things you can change. Avoid caffeine, alcohol, chocolate and nicotine. All those tend to increase your heart rate.
Join social groups or volunteer for some charity. Being in the company of others sometime relieves the tension. Being alone tends to make things seem harder than they really are.

It is advised to keep a diary of how you feel everyday and what you did to change it. Looking back on your diary might show you some common reasons for your anxiety and might reveal some technics that work for you. You have to make sure your symptoms are not getting worse while you treat yourself.
When all those things don’t seem to help, ask for advice from a medical professional.