hello Smoking is a difficult habit to quit .It needs more than will power to give up long term smoking habit The difficulty in quitting smoking is because of the withdrawal symptoms.That is ,irritability ,poor concentration craving for smoke headache ,drowsiness etc Quitting smoking can be made easy by taking anti craving medications and nicotine replacement therapy in the form of nicotine patches and gum. This  helps overcome immediate withdrawal symptoms that you suffer when you quit smoking .Please consult a psychiatrist to prescribe you nicotine replacement and anti craving medications .Quitting smoking is one of the best things that you can do to stay healthy .All the best.