3 days into withdrawal/temptations

I very nearly had a cigarette today but held off i was at the toilet block where i'm living and someone offered me a smoke as he said he'd seen me picking up butts a while ago I said i was despreatly trying to quit but still was tempted. I still haven't quite let go as i guess i'm only into the first week the smell i didn't like i guess it was just that feeling you get when you haven't smoked in days/weeks. My NRT is going very well so i don't want to slip up just trying my best to stay away from the cigarettes becuase normally if someone offered me a smoke i'd take it eager to light up.