In my job, I'm away for half of the year. They probably wouldn't care even if they knew. I haven't got the most addictive personality but I still control it by saying that I may only smoke while I'm not away and not before 5 in the afternoon, stops me from overdoing it. 6 months tho, quite a challange, if you're busy you shouldn't have much of a problem; bordom is the hardest thing to resist I rekon. As long as you're doing something you should be alright.