Help with quitting occasional smoking?

After a few years I quit my three a day cigarette smoking, I've been occasionally having a cigarette a few times a week. I started jogging ever since I was 18 to motivate me to quit smoking. I succeeded so much that I disliked smoking. Now at 25, I go back to college after having a year off, I seem to want one but to avoid hunger pangs, and it makes me feel so relaxed when I'm emotionally stressed over family issues (aunts, uncles, etc., I have no kids). But I don't want to want one because it stinks and I don't want to kiss someone and have cigarette mouth. Also I absolutely love to jog, it makes me feel powerful and of course keeps me in shape. Smoking can sometimes make me slow down in jogging and probably make me fat. Since I'm capable of leaving or ignoring the want to smoke..............what are some images or thoughts to motivate me to not smoke even if its just one a day. Am I doomed for life? Once someone smokes even one a day, will they always be attached to it for the rest of their lives, even if its just one a day? I need to know, in case I meet my perfect match, I don't want them surprised when after so many years of marriage, all of a sudden I have an occasional cigarette, they will absolutely not approve.