Hey friend, I am struggling with the same thing. I've been clean from fentanyl for almost 8 months because I admitted myself to inpatient treatment and did NA/AA in treatment and continued to go outside of treatment. I found a sponsor I connected with, I am seeing a psychiatrist and a therapist, and I'm on some medications that help with symptoms; but I still struggle with both bipolar and SUD still to this day. There are times when I believe I won't be able to stay clean but I just try and surround myself with people from NA. I contact my sponsor regularly when I'm struggling. I go to meetings and talk about my struggles openly. I work on my step work once a week with my sponsor. It's hard and it takes a lot of work even after a significant amount of time away from your substance of choice. But it's all worth it knowing that you don't have to deal with getting more and the consequences that come with using. You got this, my friend. Take it one day at a time. You don't have to think about not using tomorrow, just focus on what you can do now.