Hi and Welcome,
You made a good decision to stop using the drugs. I understand that you feel confused and unsure of who you are. When I stopped drinking I had no clue who I really was. I had to start to really look at myself and figure things out. I also had to make a lot of changes in what I did and who I spent time with. It comes down to choices. You know who will support you in your sober life and who won't.
This board is a good and safe place to come and there are lots of great people here who will support you.