ADHD and drug addiction?

I just got diagnosed with ADHD two days ago. It's gonna be a week or so to get my prescription for medication. I always knew that i function different then everybody else but never got a dignosis until now. Scrolling through this sub reading the questions,struggles i realized a lot of things make sense now. I'm dealing with drug addiction since i was 18 and now i'm turning 23. I cannot escape this circle no matter how hard i try. When i start to manage things right a few days later i give up and i end up in this circle again and i'm losing my mind over it. I constantly wanna escape reality. I wonder if my drug addiction started because i have adhd and as if i never knew for sure i never dealt with it so i chose unconsciously to help my symtoms with drugs. Does anyone here is in a simmilar situation? If yes, how do you deal with it? I started to read about adhd and understand it so i can learn to live with it. Thanks in advance for your responses.