It is really better to quit early than later and nice that you are wanting to quit. I do not smoke and have not tried smoking. My grandmother used to smoke several sticks daily for maybe more than 10 years and just decided to stop smoking and that was it. She had a strong self control and able to quit without intervention or anything. But that could not works for everyone since we are different, maybe you can try joining support groups and find more motivation to totally quit smoking.