Giving up ciggies for a few hours is easy. I used to smoke and not smoking for 6, 9 hours on a flight or whatever is a piece of p***. Just get your attitude right and stop whining it's not like you are having a leg cut off under no anesthetic. Its a ciggy - you don't need it - suck your thumb if you need a nipple substitute. It's pathetic really. You can distract yourself in many ways use all kinds of patches & gum or just think to yourself 'Lets give abstinence a go and see what we can achieve.'
So yeah - HTFU.