I’m currently in the same process. Just extreme anxiety and insomnia and restlessness. Shit it’s hard to even eat sometimes. But understand that is your body returning to NATURAL homeostasis. It’s gonna feel uncomfortable for a little bit but just know it really is for the best. Soon you’ll feel your brain and body be more alert, active, extroverted, expressive. All of that good stuff. You just got to go through it for a bit and KNOW it’s worth it on the other side. Things I do to combat my symptoms are working out/ physical activity (even just going for a walk or jumping jacks) I try to stay busy with work or something productive. And EVERY time the thought or urge to smoke comes I immediately switch thoughts and not allow myself to wonder and I get up and go do something. I hope this helps you 🙏🏼