4 months sober from weed

I’m 16 years old and I used to smoke weed everyday for a year. Before anyone judges I suffer from borderline personality disorder and weed has been very accessible to me because everyone in my life would smoke or provide me with free weed, including my family. During my addiction, I never wanted to quit until I had gotten psychosis from it twice which made me quit. Now I have so much regret from it, my memory is still very bad and I still experience dissociation everyday. I thought quitting would make me feel better but I feel worse now. I feel really stupid compared to before I started smoking, I didn’t think it would affect my brain this much. I just feel so much regret that I think about everyday. It feels like i’m never gonna fully recover from it and like I ruined my life.