I really appreciate you sharing this. Just a thought: what would you think about ditching the current circle of friends you have now and making some new friendships with people who don't do those detrimental things? They are out there. A great place to start looking for them is any Christian church, actually. People who go to church are generally goodhearted and live clean lives. If that's not something you can do right now, you could also try social groups around a common interest. So let's say you enjoy hiking or camping, you could go to Meetup.com and connect with other people who enjoy those things. Then you go to the meetings and events and start making friends :)