Perhaps answering these questions from the Narcotics Anonymous leaflet "Am I an Addict?" will help you answer your question.
- Do you ever use alone?
- Have you ever substituted one drug for another, thinking that one particular drug was the problem?
- Have you ever manipulated or lied to a doctor to obtain prescription drugs?
- Have you ever stolen drugs or stolen to obtain drugs?
- Do you regularly use a drug when you wake up or when you go to bed?
- Have you ever taken one drug to overcome the effects of another?
- Do you avoid people or places that do not approve of you using drugs?
- Have you ever used a drug without knowing what it was or what it would do to you?
- Has your job or school performance ever suffered from the effects of your drug use?
- Have you ever been arrested as a result of using drugs?
- Have you ever lied about what or how much you use?
- Do you put the purchase of drugs ahead of your financial responsibilities?
- Have you ever tried to stop or control your using?
- Have you ever been in a jail, hospital, or drug rehabilitation center because of your using?
- Does using interfere with your sleeping or eating?
- Does the thought of running out of drugs terrify you?
- Do you feel it is impossible for you to live without drugs?
- Do you ever question your own sanity?
- Is your drug use making life at home unhappy?
- Have you ever thought you couldn’t fit in or have a good time without drugs?
- Have you ever felt defensive, guilty, or ashamed about your using?
- Do you think a lot about drugs?
- Have you had irrational or indefinable fears?
- Has using affected your sexual relationships?
- Have you ever taken drugs you didn’t prefer?
- Have you ever used drugs because of emotional pain or stress?
- Have you ever overdosed on any drugs?
- Do you continue to use despite negative consequences?
- Do you think you might have a drug problem?
Taken from:
http://www.na.org/ips/eng/IP7.htm