When you’re nicotine dependent, smoking releases neurotransmitters into your brain, one of which is dopamine. It’s dopamine that gives you that relaxed and satisfied feeling when you light up. When ending your dependency on nicotine, you may feel withdrawal symptoms. It can be tough, but know that it’s your body’s way of getting back to a healthy way of functioning. Hang in there. Stick with it. It will get better as your quit progresses.