Once you can recognize the triggers, try substituting alternative behaviors. Tell the people in your life that you want to quit. Set a quit date and ask them to support you in your decision. You will be on edge at first and their understanding of your irritability is important. Make a pact to quit with a friend.
Some people benefit from organizations and support groups.
Call a friend who has already quit for support during rough moments. The urge to smoke will pass, whether you light up or not. As time goes on, the urge to smoke will become less intense and easier to manage. When you feel an urge coming on, take three deep breaths, brush your teeth, walk around the block or drink some water. Also pay close attention to your diet.