You can talk to a good friend, but it is best that you
Consult your family. Talk to a sibling first before approach your parents, if that helps. You can also utilise resource from AADK or call the relevant helpline for gain more information and assistance.
At the same time, examine the checklist (Toolkit 1) to determine if you bear symptoms of drug addiction and further examine Toolkit 2 to determine your level of drug usage and addiction.