When discussing the 4 D's of smoking cessation, it is important to focus on the following: Developing a plan to quit, Deciding on a quit date, Dealing with cravings and withdrawals, and Developing healthier habits. Developing a plan involves researching options for quitting, such as using nicotine replacement therapy, or joining a quit program. Deciding on a quit date can help make someone more motivated to quit. Dealing with cravings and withdrawals is an important step, as nicotine is highly addictive. Finally, developing healthier habits can help replace the habit of smoking, such as exercising, eating healthier, and avoiding triggers.