i think i have an addiction.

i think im addicted to dxm, weed and cigarettes. im only 19 and idk what to do. the cravings are crazy and im pretty sure i have an addictive personality too. my mental health is trash (bpd/ocd/ptsd) and drugs feel like they help so much but i know in the long run they won't. i don't know how to tell my parents either, though my mom is starting to mention my cigarette use so im not sure if she knows already