Yes, nicotine addiction is possible even if you have never smoked. When you crave nicotine, you become dependent and find it difficult to cut back. Nicotine causes your brain to feel good, but these feelings are temporary. As a result, you light another cigarette. You need more nicotine to feel good the more you smoke. You go through uncomfortable mental and bodily changes when you try to stop. These are signs of quitting nicotine.