While Self-Quitting Is Definitely Possible for Smokers, It Can Be

While self-quitting is definitely possible for smokers, it can be difficult to determine what is considered as successful because:

A) Even when the same interval is used, rates of quitting can depend on how continuous each success is.
B) Someone who quit and did not smoke continuously over a 6month period would be counted a only one success
C) Someone who quit on four different occasions over the same period, having relapsed on three of the attempts would get counted as four successes
D) all of the above