You can do all things through Christ who strengthens you. Phil 4:13
Greater is he than is in me than he that is in the world.1John 4:4
You first must be saved. Romans 9:9-10. Acts 17:30 - God commands all men everywhere to repent.
Luke 13:3 - Unless you repent you will likewise perish.
You have to want to glorify God and die to self more than you want the drink. The fear of the Lord is the beginning of wisdom. I used to be a pothead like cheech and chong. I used to think I needed zanax to sleep and get me through the day. I was a fornicator too! I was a mess. Im not perfect yet because I am not with the Lord in heaven yet( glorified) but I am a work in progress (santified). I am the clay and God is my potter. God delivered me from it all! God frees us from the bondage of sin. Humble yourself. Seek the Lord. Jesus Christ can set you free!
Proverbs 16:6 - By mercy and truth iniquity is purged: and by the fear of the LORD [men] depart from evil.
Ill pray for you. I want you to be free.
Please commit yourself to reading the bible every single day. Seek the Lord in the early morning hours. You will find him. Christ said if you knock I will answer.