Addiction is a debilitating condition that so many people face — almost 21 million Americans deal with at least one.

Most people at least know someone who suffers from an addiction, but it's often not talked about in our culture. In an effort to help break barriers associated with addiction, here are 19 celebs who have been super open about their experiences!
1. Demi Lovato

2. Robert Downey Jr.

3. Danny Trejo

6. Dax Shephard

7. Matthew Perry

8. Simon Pegg

9. Elton John

10. Jamie Lee Curtis

11. Carrie Fisher

12. Eva Mendes

13. Brad Pitt

14. Justin Bieber

15. Zac Efron

16. Samuel L. Jackson

17. Fergie

18. Naomi Campbell

19. And finally, Jane Fonda

If you or someone you love is struggling with an addiction, here are some resources that might be of help:
Find an Alcoholics Anonymous meeting group near you here.
Talk to a representative from the Substance Abuse and Mental Health Services Administration (SAMHSA) on their free, confidential, 24/7 national helpline by calling 1-800-662-HELP.
Or if you or someone you love is having suicidal thoughts, call or visit the Suicide Prevention Lifeline at 1-800-273-8255.