Good question. Simple answer, don't use substances that can be addictive. This is the safest approach espcially if you have a strong family history of addiction in your family. I will leave it at that, that is the best way to avoid becoming addicted, period. Be healthy, eat right, exercise, have a good network of friends, talk about your feelings, use healthy coping methods to deal with life stressors.
Dont experiment. Even once is too much - avoid experimenting - learn more at - http://learn. Genetics. Utah. Edu/content/addiction/drugs/.