I'm friendlier, my thought process is more clear and less scattered, I don't surprise people with chatty behavior some of the day and then ghost them other times of the day, and I'm more aware of my overall health and energy levels. If I stop running, lifting weights, eating a really clean diet, sleeping restfully, or start smoking/drinking - I feel it now and there's no hiding from it. While on Adderall, all of my bad health habits were just a slight adjustment to a dosage away from being a non-issue for another month, but the downward health spiral from ignoring all the extra care I could be doing for myself really started adding up.
Looking back at that time, I really thought I was being hyper productive while on it, but I think it was more like I was spinning my wheels really fast, not going very far, and feeling unreasonably good about the progress I was making because all my brain's reward centers were constantly firing. I could do an endless amount of simple work, and actively sought out that type of work, but the real deep critical thinking stuff I started to balk at and look for ways to justify avoiding - usually by doing double or triple the amount of simple stuff. It's odd that it made me feel so dang confident in my abilities.
No hate to those who have ADHD and take it, but, for me who was taking it illicitly at low dosages (1mg-5mg), all the negative side-effects drastically outweighed the benefits and I only really saw that once I found it inside me to stop.
Definitely sucks having to re-train my willpower though. It was just so damn easy to delegate all of that to the drug. It took a few months before I felt I could really convince my brain to work hard on its own, but now I'm back!
Good luck and best wishes to all those out there that see a bit of themselves in this post :)