@IamFree, I used to have no boundaries myself. My therapist at the time told me I was codependent. I learned everything I could about codependence and started going to CoDA of my own accord. For me, it was obvious what people I had to separate from, as my mom, dad, ex-boyfriend, and another friend were abusive. Still, these people were my whole life and I was completely on my own as I began setting boundaries and changing. The solitude, however, ended up being the best thing for me because I really embraced self-care. I started doing nice things for myself all the time that I never would have done in the past. I started making sure I got to bed at the same time every night, I worked through the Feeling Good handbook to reduce some of my depression, I really focused on my therapy. It boosted my self-esteem a lot. I started to come out of a dissociated fog and experience more joy. Eventually, I did so much to be healthy that I started realizing I was significantly more healthy than the people at CoDA and just went it alone for a while. I transferred back to my old school where there were more activities so I could build a support network of healthier people. I started recovering from anorexia, was diagnosed with PTSD, started seeing a trauma specialist, and more. The trauma specialist and I connected, which is rare for me, and I didn't feel alone anymore. She wanted me to unburden myself of my problems and let her help. Eventually, I was healthy and regularly happy enough that I wanted to bring a boyfriend into my life, since I hadn't had one in a long time and needed some more intense emotional support. I found the most amazing guy on OKCupid. Since I met him, as well as some friends from a support group I did, I'm more willing to distance myself more and more from less healthy people and to focus on the things that fuel my recovery.
I was best friends with a certain guy for eight years up until this year. We stay in touch every now and then, and there's no real reason to not be friends, other than that he's not healthy; he smokes, cannot be vulnerable or have real/meaningful conversation, and is going in a completely different direction from me. We laugh a ton when we do talk, but it's less frequent now. I never knew how supportive, kind, open-minded, and loving people could be until this year. When I look at my old friend, I see how things I used to overlook, like his racism, condescension, unreliability, selfishness, and occasional meanness, seem less acceptable to me now. You deserve the very best friends in the world, and they're out there. It doesn't mean you have to ice out your friend completely if there are parts of them you love. Their friendship gives you an opportunity to figure out what it is you're really looking for; what you do, and don't like in a friend, as well as a bridge when you are feeling alone. I stayed friends with this guy while I was recovering. Now, our occasional calls have faded to Snapchats here and there. I have much less desire to speak to him now than I used to, since my life is full of so much more replenishing, mutual, healthy relationships than it used to be.
I'm guessing, as someone who smoked and did coke, you aren't very used to treating yourself and your body with a great deal of kindness either. Creating self-care goals and other life goals for yourself and working toward them could be enough of a distraction you don't even feel very alone. If you need or want a healthy friend to help you through, I'm right here and you can always reach out to me. :)
I have so much hope for you! Congrats on getting help and seeking healthy relationships; they're out there and things get much better!!!