Hi Mohammad, I used to smoke but I don't think I was ever addicted.My husband was a heavy smoker and he promised me when we got married that he would quit.Then he promised me when I was pregnant that he would quit.Then he promised me that when our baby was born he would quit.Finally when our son was about 5 he quit.I am so happy because I was afraid when he used to smoke around the baby. All my begging never helped.The only way he could quit was when he suddenly had a strong pain in his chest and he was afraid he is going to have a heart attack.So I think if you have very strong motivation for quitting,like if you are afraid you will die then you can do it.It is not easy to quit but you will feel more healthy and save money.So try to make a decision,and keep away from those friends who smoke and hang out with people who are healthy and then you will not be tempted to go back to it. Good luck.