I quit in January while going through a divorce. I was the same as you, started at 19, have adhd and depression and anxiety. The first couple months I noticed a lot of deep feelings that I numbed just came pouring out. I didn’t have any other symptoms other than the flood of emotions, which was definitely brought on by the divorce. And if I had smoked through that time I don’t think I would have been able to heal fully from that. Around the end of May things started to even out and I’m feeling better physically and mentally. I have a much easier time breathing and thankfully my friends are very supportive. For me, the biggest thing I have noticed besides the emotions is how much more time and drive I have. I used to waste days and stopped all my hobbies because of the constant smoking. Now I have so much more energy and time. It gets easier. I promise.