Not everyone who quits deals with obsessions. I didn't. But, if I were to pick up again I sure would obsess. That is the nature of addiction. I might be able to exercise control over it for a while but it would be a Herculean effort and eventually I would lose.
Ask an ex smoker if they can enjoy the occasional smoke and they will tell you the same thing. One or two they might control for a bit but give them a week and they will be right back to their pack a day habit. That's addiction.