The well-documented dangers of any addictive substance use can include increased risk for many cancers and heart disease. Positive behaviors that improve health include cessation of tobacco use and limiting the intake of alcohol. 

Understanding yourself is the key to responsible decision making. When you know your values (the ideas that are most important to you), you can use them as your guide. Knowing and using your strengths can help you stick to a decision you’ve made, even when it is difficult. And being aware of your mental, emotional, and physical state can help you understand what challenges you might face in different situations.