What do you suggest if i would like to quit smoking but the devil possesses me. i been smoking since age 10, regularly since age 16, ?

Nobody can motivate: another person, ultimately. I can tell you that smoking can take 15 years off your life, and not only cause early death, but make the last years miserable, with inability to catch your breath, the effects of cancer and its treatment, heart disease, stroke, peripheral vascular disease and oh so many other horrors. But you have to be the one to decide to do something positive for your life/health.