i decided not to amoke but i was wondering how do you know that you are addicted to cigarettes and what exactly is a craving
You are addicted when you "have to" have another cigarette. Craving is an internal need for something.
If you're addicted (to anything ) the want/need for it is never quite sated. As a smoker, you finish a cigarette and a part of your brain begins counting down until you can have another. You wake up wanting to smoke, you smoke just before going to bed, every part of your day revolves around getting to your next cigarette (at least in some small way). Not a fun ride.
Drawing on my fine command of language, I said nothing. ~ Mark Twain
I second Azeraeis advice
"...Sometimes you have to let go, just to see if there's anything worth holding on to..."